机械专业术语大全

1、机械专业术语（英语）大全 机械专业术语，中英文对照！阿基米德蜗杆 Archimedes worm安全系数 safety factor; factor of safety安全载荷safe load凹面、凹度 con cavity扳手wrench板簧 flat leaf spring半圆键 woodruff key变形 deformation摆杆 oscillating bar摆动从动件 oscillating follower摆动从动件凸轮机构 cam with oscillati ng follower摆动导杆机构 oscillating guide-bar mechanism摆线齿轮 cyc

2、loidal gear摆线齿形 cycloidal tooth profile 摆线运动规律cycloidal motion 摆线针轮 cycloidal-pin wheel 包角 angle of contact 保持架cage 背对背安装 back-to-back arrangement 背锥 back cone ；normal cone背锥角back angle 背锥距 back cone distanee 比例尺scale 比热容 specific heat capacity 闭式链 closed kinematic chain 闭链机构 closed chain mechanism臂

3、部 arm并行工程 concurrent engineering变频器 frequency converters变频调速 frequency control of motor speed变速 speed change变速齿轮 change gear ; change wheel变位齿轮 modified gear变位系数 modification coefficient标准齿轮 standard gear标准直齿轮 standard spur gear表面质量系数 superficial mass factor表面传热系数 surface coefficient of heat transfe

4、r表面粗糙度 surface roughness并联式组合 comb in ati on in parallel并联机构 parallel mechanism并联组合机构 parallel comb ined mecha nism槽轮机构 Geneva mechanism ； Maltese cross并行设计 concurred design, CD不平衡相位 phase angle of unbalanee不平衡 imbalanee (or unbalanee)不平衡量 amount of unbalanee不完全齿轮机构 in termitte nt geari ng波发生器 wave

5、generator波数 number of waves补偿 compensation参数化设计 parameterizationdesign, PD残余应力 residual stress操纵及控制装置 operati on con trol device槽轮 Geneva wheel槽数 Geneva numerate槽凸轮groove cam侧隙 backlash差动轮系 differential gear train差动螺旋机构 differential screw mechanism差速器 differential常用机构 conven ti onal mecha ni sm; mec

6、ha nism in com mon use车床lathe承载量系数 bearing capacity factor承载能力 bearing capacity成对安装 paired mounting尺寸系歹U dimension series齿槽 tooth space齿槽宽 spacewidth齿侧间隙backlash齿顶高addendum齿顶圆 addendum circle齿根高dedendum齿根圆 dedendum circle齿厚 tooth thickness齿距 circular pitch齿宽 face width齿廓 tooth profile齿廓曲线tooth curve

7、齿轮gear齿轮变速箱 speed-changinggear boxes齿轮齿条机构 pi nio n and rack齿轮插刀 pinion cutter; pinion-shaped shaper cutter齿轮滚刀 hob ,hobbing cutter齿轮机构 gear齿轮轮坯blank齿轮传动系 pinion unit齿轮联轴器 gear coupling齿条传动 rack gear齿数 tooth number齿数比gear ratio齿条rack齿条插刀 rack cutter; rack-shapedshaper cutter齿形链、无声链 sile nt cha in齿形系

8、数 form factor齿式棘轮机构 tooth ratchet mechanism插齿机 gear shaper重合点 coincident points重合度 con tact ratio冲床punch传动比 transmission ratio, speed ratio传动装置 gearing; transmission gear传动系统 driven system传动角 transmission angle传动轴 transmission shaft串联式组合 comb in ati on in series串联式组合机构 series comb ined mecha nism串级调

9、速 cascadespeed control创新 innovation ; creation仓U新设计 creation design垂直载荷、法向载荷 normal load唇形橡胶密圭寸lip rubber seal磁流体轴承 magnetic fluid bearing从动带轮 driven pulley从动件 driven link, follower从动件平底宽度width of flat-face从动件停歇follower dwell从动件运动规律follower motion从动轮 driven gear粗线 bold line粗牙螺纹 coarse thread大齿轮gear

10、wheel打包机packer打滑 slipping带传动 belt driving带轮 belt pulley带式制动器 band brake单列轴承 single row bearing单向推力轴承 single-direction thrust bearing单万向联轴节 single universal joint单位矢量 unit vector当量齿轮 equivale nt spur gear; virtual gear等效构件 equivale nt li nk当量齿数 equivale nt teeth nu mber; virtual nu mber of teeth当量摩擦系

11、数 equivale nt coefficie nt of fricti on当量载荷 equivale nt load刀具cutter导数 derivative倒角 chamfer导热性 conduction of heat导程lead导程角 lead angle等加等减速运动规律 parabolic motion; constant accelerationand deceleration motion等速运动规律 uniform motion; constant velocity motion等径凸轮 conjugate yoke radial cam等宽凸轮 constant-brea

12、dthcam等效力 equivale nt force动力学dynamics等效力矩 equivale nt mome nt of force等效量 equivale nt等效质量 equivale nt mass等效转动惯量 equivale nt mome nt of in ertia等效动力学模型 dyn amically equivale nt model底座 chassis低畐寸lower pair点划线 chain dotted line（疲劳）点蚀pitt ing垫圈gasket垫片密圭寸gasket seal碟形弹簧 belleville spring顶隙 bottom cle

13、aranee定轴轮系 ordinary gear train; gear train with fixed axes动密圭寸 kinematical seal动能 dynamic energy动力粘度 dynamic viscosity动力润滑 dynamic lubrication动平衡 dynamic balanee动平衡机 dynamic balancing machine动态特性 dynamic characteristics动态分析设计 dynamic analysis design动压力 dynamic reaction动载荷 dynamic load端面 transversepl

14、ane端面参数 transverseparameters端面齿距 transversecircular pitch端面齿廓 transversetooth profile端面重合度 tran sversec on tact ratio端面模数 transversemodule端面压力角 transversepressure angle锻造forge对称循环应力 symmetry circulati ng stress对心滚子从动件 radial (or in-line ) roller follower对心直动从动件 radial (or in-line ) translating follo

15、wer对心移动从动件 radial reciprocat ing follower对心曲柄滑块机构 in-line slider-crank (or crank-slider) mechanism 多歹U轴承 multi-row bearing多楔带 poly V-belt多项式运动规律 polyno mial moti on多质量转子 rotor with several masses惰轮 idle gear额定寿命rati ng life额定载荷 load ratingII级杆组dyad发生线 gen erat ing line发生面 generating plane法面 normal p

16、lane法面参数 normal parameters法面齿距 normal circular pitch法面模数 normal module法面压力角 no rmal pressure an gle法向齿距 normal pitch法向齿廓 normal tooth profile法向直廓蜗杆 straight sided normal worm法向力 normal force反馈式组合 feedback combining反向运动学 inverse ( or backward) kinematics反转法 kinematic inversion反正切Arctan范成法 gen erat in

17、g cutt ing仿形法 form cutting方案设计、概念设计 con cept desig n, CD防振装置 shockproof device飞轮 flywheel飞轮矩 moment of flywheel非标准齿轮 nonstandard gear非接触式密圭寸 non-contact seal非周期性速度波动 aperiodic speed fluctuati on非圆齿轮 non-circular gear粉末合金 powder metallurgy分度线 referenee line; standard pitch line分度圆 referenee circle; s

18、tandard (cutting) pitch circle分度圆柱导程角 lead an gle at refere nee cyli nder复杂机构 complex mechanism分度圆柱螺旋角 helix an gle at refere nee cyli nder分母 denominator分子 numerator分度圆锥 referenee cone; standard pitch cone分析法 analytical method圭寸闭差动轮系 pla netary differe ntial复合铰链 compound hinge复合式组合 compound combinin

19、g复合轮系 compo und (or comb in ed) gear train复合平带 compound flat belt复合应力 combined stress复式螺旋机构 Compound screw mechanism杆组 Assur group干涉 interferenee刚度系数 stiffness coefficient刚轮 rigid circular spline钢丝软轴 wire soft shaft刚体导引机构 body guida nee mecha nism刚性冲击 rigid impulse (shock)刚性转子rigid rotor刚性轴承rigid be

20、aring刚性联轴器rigid coupling高度系歹U height series高速带 high speed belt高畐寸 higher pair格拉晓夫定理Grashoffs law根切 undercutting公称直径 nominal diameter高度系歹U height series功 work工况系数 application factor工艺设计 tech no logical desig n工作循环图 working cycle diagram工作机构 operation mechanism工作载荷 external loads工作空间 working space工作应力

21、 working stress工作阻力 effective resista nee工作阻力矩 effective resistancemoment公法线 com mon no rmal line公共约束 general constraint公制齿轮 metric gears功率power 功能分析设计 function analysesdesign冠轮 crown gear共轭齿廓 conjugate profiles共轭凸轮 conjugate cam构件link鼓风机blower固定构件 fixed link; frame固体润滑剂solid lubricant关节型操作器 jointed

22、 manipulator惯性力 inertia force惯性力矩 moment of inertia ,shaking moment 惯性力平衡 balanee of shaking force惯性力完全平衡 full balanee of shaking force惯性力部分平衡 partial balanee of shaking force惯性主矩 resultant moment of inertia惯性主失 resultant vector of inertia广义机构 generation mechanism广义坐标 gen eralizedcoord in ate轨迹生成 pa

23、th generation轨迹发生器 path generator滚刀hob滚道 raceway滚动体 rolling element滚动轴承 rolling bearing滚动轴承代号 rolling bearing identification code滚针 needle roller滚针轴承 needle roller bearing滚子roller滚子轴承 roller bearing滚子半径 radius of roller滚子从动件roller follower滚子链 roller chain滚子链联轴器 double roller chain coupling滚珠丝杆ball s

24、crew滚柱式单向超越离合器roller clutch过度切割undercutting函数发生器 function generator函数生成 function generation含油轴承oil bearing耗油量 oil consumption耗油量系数 oil consumption factor赫兹公式 H. Hertz equation合成弯矩 resultant bending moment合力 resultant force合力矩 resultant moment of force黑箱 black box横坐标abscissa互换性齿轮 interchangeablegears

25、花键spline滑键、导键feather key滑动轴承 sliding bearing滑动率 sliding ratio滑块slider环面蜗杆 toroid helicoids worm环形弹簧 annular spring缓冲装置 shocks; shock-absorber 灰铸铁 grey cast iron回程return回转体平衡 balanee of rotors混合轮系 compound gear train积分 integrate机电一体化系统设计 mecha nical-electrical ntegrati on system desig n机构 mechanism机构

26、分析 analysisof mechanism机构平衡 balanee of mechanism机构学 mechanism机构运动设计 kinematic design of mechanism 机构运动简图 kinematic sketch of mechanism 机构综合 synthesisof mechanism 机构组成 constitution of mechanism 机架 frame, fixed link机架变换 kinematic inversion机器 machine机器人robot机器人操作器 manipulator机器人学 robotics技术过程 technique

27、 process技术经济评价 technical and economic evaluation技术系统 technique system机械 machinery机械创新设计 mechanical creation design, MCD机械系统设计 mechanical system design, MSD机械动力分析 dynamic analysis of machinery机械动力设计 dynamic design of machinery机械动力学 dynamics of machinery机械的现代设计 moder n machi ne desig n机械系统 mechanicals

28、ystem机械禾U益 mechanicaladvantage机械平衡 balanee of machinery机械手 manipulator机械设计 machine design; mechanicaldesign机械特性 mechanicalbehavior机械调速 mechanicalspeed governors机械效率 mechanicalefficiency机械原理 theory of machines and mechanisms机械运转不均匀系数 coefficient of speed fluctuation 机械无级变速 mechanical steplessspeed ch

29、anges 基础机构 fun dame ntal mecha nism基本额定寿命basic rating life基于实例设计 case-basecdesign,CBD基圆 base circle基圆半径 radius of base circle基圆齿距 base pitch基圆压力角 pressure angle of base circle基圆柱 base cylinder基圆锥base cone计算力矩 factored moment; calculation moment急回机构 quick-return mechanism急回特性 quick-return characteris

30、tics急回系数 advance-to return-time ratio急回运动 quick-return motion棘轮 ratchet棘轮机构 ratchet mechanism棘爪pawl 极限位置 extreme (or limiting) position极位夹角 crank angle between extreme (or limiting) positions计算机辅助设计 computer aided desig n, CAD计算机辅助制造 computer aided manu facturi ng, CAM计算机集成制造系统 computer in tegrated

31、manu facturi ng system, CIMS计算弯矩 calculated bending moment加权系数 weighting efficient力卩速度acceleration加速度分析 accelerationanalysis力卩速度曲线 accelerati on diagram尖点 pointing; cusp尖底从动件 knife-edge follower间隙 backlash间歇运动机构 intermittent motion mechanism减速比 reduction ratio减速齿轮、减速装置 reducti on gear减速器 speed reduc

32、er减摩性 anti-friction quality渐开螺旋面 in volute helicoid渐开线in volute渐开线齿廓in volute profile渐开线齿轮 involute gear渐开线发生线 gen erat ing line of invo lute 渐开线方程 involute equation 渐开线函数 in volute fun ctio n 渐开线蜗杆in volute worm渐开线压力角 pressure angle of involute 渐开线花键 involute spline简谐运动 simple harmonic motion键key键槽

33、keyway交变应力 repeated stress交变载荷 repeated fluctuating load交叉带传动 cross-belt drive交错轴斜齿轮 crossed helical gears胶合 scoring角加速度 angular acceleration角速度 angular velocity角速比 angular velocity ratio角接触球轴承 angular contact ball bearing角接触推力轴承 an gular contact thrust beari ng 角接触向心轴承 an gular contact radial beari

34、 ng 角接触轴承 angular contact bearing铰链、枢纽hinge校正平面 correcting plane接触应力 contact stress接触式密圭寸con tact seal阶梯轴 multi-diameter shaft结构 structure结构设计 structural design截面 section节点 pitch point节距 circular pitch; pitch of teeth节线 pitch line节圆 pitch circle节圆齿厚 thickness on pitch circle节圆直径 pitch diameter节圆锥pit

35、ch cone节圆锥角 pitch cone angle解析设计 analytical design紧边 tight-side紧固件fastener径节 diametral pitch径向 radial directi on径向当量动载荷 dyn amic equivale nt radial load径向当量静载荷 static equivale nt radial load径向基本额定动载荷 basic dyn amic radial load rat ing径向基本额定静载荷 basic static radial load tat ing径向接触轴承 radial contact be

36、aring径向平面radial plane径向游隙 radial internal clearanee径向载荷radial load径向载荷系数radial load factor径向间隙 clearanee静力 static force静平衡 static balanee静载荷 static load静密圭寸static seal局部自由度 passive degree of freedom矩阵matrix矩形螺纹 square threaded form锯齿形螺纹 buttress thread form矩形牙嵌式离合器 square-jawpositive-c ontact clutch

37、 绝对尺寸系数 absolute dimensional factor 绝对运动 absolute motion 绝对速度 absolute velocity均衡装置 load balancing mechanism抗压强度 compression strength开口传动 open-belt drive开式链 open kinematic chain开链机构 open chain mechanism可靠度 degree of reliability可靠性 reliability可靠性设计 reliability design, RD空气弹簧 air spring空间机构 spatial me

38、chanism空间连杆机构spatial linkage空间凸轮机构spatial cam空间运动副 spatial kinematic pair空间运动链 spatial kinematic chain空转idle宽度系列width series框图 block diagram雷诺方程 Reyno Idsequati on离心力 centrifugal force离心应力 centrifugal stress离合器clutch离心密圭寸 centrifugal seal理论廓线pitch curve理论啮合线 theoretical line of action隶属度 membership力

39、 force力多边形 force polygon力圭寸闭型凸轮机构 force-drive (or force-closed) cam mechanism 力矩moment力平衡 equilibrium力偶couple力偶矩 moment of couple连杆 connecting rod, coupler连杆机构linkage连杆曲线 coupler-curve连心线 line of centers链 chain链传动装置 chain gearing链轮 sprocket ; sprocket-wheel ; sprocket gear ; chain wheel联组 V 带 tight-

40、up V belt联轴器 coupling ; shaft coupling两维凸轮 two-dimensional cam临界转速 critical speed 六杆机构 six-bar linkage 龙门刨床 double Haas planer 轮坯blank 轮系 gear train 螺杆screw 螺距 thread pitch 螺母 screw nut 螺旋锥齿轮 helical bevel gear 螺钉screws 螺栓bolts螺纹导程lead螺纹效率 screw efficiency 螺旋传动 power screw迷宫密圭寸labyrinth seal螺旋密圭寸spi

41、ral seal螺纹 thread (of a screw)螺旋副 helical pair螺旋机构 screw mechanism螺旋角 helix angle螺旋线 helix ,helical line绿色设计 green design ; design for environment马耳他机构 Geneva wheel ; Geneva gear马耳他十字Maltese cross脉动无级变速 pulsating stepless speed changes脉动循环应力 fluctuating circulating stress脉动载荷 fluctuating load铆钉rivet

42、密圭寸seal密圭寸带seal belt密圭寸胶seal gum密圭寸元件 potted component密圭寸装置 sealing arrangement面对面安装 face-to-face arrangement面向产品生命周期设计 design for products life cycle, DPLC名义应力、公称应力 nominal stress模块化设计 modular design, MD模块式传动系统 modular system模幅箱 morphology box模糊集fuzzy set模糊评价 fuzzy evaluation模数module摩擦 friction摩擦角

43、friction angle摩擦力 friction force摩擦学设计 tribology design, TD摩擦阻力 frictio nal resista nee摩擦力矩 friction moment摩擦系数 coefficient of friction摩擦圆 friction circle磨损 abrasion ;wear; scratching末端执行器 end-effector目标函数 objective function耐腐蚀性 corrosi on resista nee耐磨性 wear resista nee挠性机构 mechanism with flexible e

44、lements挠性转子 flexible rotor内齿轮 internal gear内齿圈 ring gear内力 internal force内圈 inner ring能量energy能量指示图 viscosity逆时针 counterclockwise (or anticlockwise)啮出 en gag in g-out啮合 engagement,mesh, gearing啮合点 con tact poi nts啮合角 working pressure angle啮合线 line of action啮合线长度 length of line of action啮入 en gag in

45、g-i n牛头刨床 shaper凝固点 freezing point; solidifying point扭转应力 torsi on stress扭矩 moment of torque 扭簧 helical torsi on spri ng 诺模图NomogramO形密圭寸圈密圭寸O ring seal 盘形凸轮disk cam盘形转子 disk-like rotor抛物线运动 parabolic motion 疲劳极限fatigue limit 疲劳强度 fatigue strength 偏置式offset偏（心）距 offset distanee 偏心率 eccentricity rati

46、o 偏心质量 eccentric mass 偏距圆 offset circle偏心盘eccentric平均速度 averagevelocity偏置滚子从动件offset roller follower偏置尖底从动件 offset kn ife-edge follower偏置曲柄滑块机构 offset slider-cra nk mecha nism拼接 matchi ng评价与决策 evaluation and decision频率 frequency平带 flat belt平带传动 flat belt driving平底从动件 flat-face follower平底宽度face width

47、平分线bisector平均应力 averagestress平均中径 mean screw diameter平衡 balanee平衡机 balancing machine平衡品质 balancing quality平衡平面 correcting plane平衡质量 balancing mass平衡重 counterweight平衡转速 balancing speed平面畐H planar pair, flat pair平面机构 planar mechanism平面运动畐寸 planar kinematic pair平面连杆机构planar linkage平面凸轮 planar cam平面凸轮机构

48、 pla nar cam mecha nism平面轴斜齿轮 parallel helical gears普通平键parallel key其他常用机构 other mecha nism in com mon use起动阶段 starting period启动力矩 starting torque气动机构 pneumatic mechanism奇异位置 singular position起始啮合点 in itial con tact , beg inning of contact气体轴承gas bearing千斤顶jack嵌入键 sunk key强迫振动 forced vibration切齿深度de

49、pth of cut曲柄crank曲柄存在条件Grashoffs law曲柄导杆机构 crank shaper (guide-bar) mechanism曲柄滑块机构 slider-crank (or crank-slider) mechanism曲柄摇杆机构 crank-rocker mechanism曲齿锥齿轮 spiral bevel gear曲率 curvature曲率半径 radius of curvature 曲面从动件 curved-shoe follower 曲线拼接 curve matching 曲线运动 curvilinear motion 曲轴 crank shaft 驱

50、动力 driving force 驱动力矩 driving moment (torque) 全齿高 whole depth 权重集 weight sets 球 ball球面滚子 con vex roller 球轴承 ball bearing 球面畐H spheric pair球面渐开线 spherical involute球面运动 spherical motion球销畐H sphere-pin pair球坐标操作器 polar coord in ate mani pulator燃点 spontaneousignition热平衡 heat balanee; thermal equilibrium

51、人字齿轮 herringbone gear冗余自由度 redundant degree of freedom柔轮 flexspline柔性冲击 flexible impulse; soft shock柔性制造系统 flexible manufacturing system; FMS柔性自动化 flexible automation润滑油膜 lubricant film润滑装置 lubrication device润滑 lubrication生产阻力 productive resista nee润滑剂lubricant三角形花键 serration spline三角形螺纹V thread scr

52、ew三维凸轮 three-dimensionalcam三心定理 Kennedys theorem砂轮越程槽 grinding wheel groove砂漏 hour-glass少齿差行星传动 planetary drive with small teeth differenee设计方法学 design methodology设计变量 design variable设计约束 design constraints深沟球轴承 deep groove ball bearing升程rise升距lift实际廓线cam profile十字滑块联轴器 double slider coupling; Oldha

53、m scoupling 矢量vector输出功 output work输出构件output link输出机构 output mechanism输出力矩output torque输出轴 output shaft输入构件in put link数学模型 mathematic model实际啮合线 actual line of action双滑块机构 double-slider mechanism, ellipsograph双曲柄机构 double crank mechanism双曲面齿轮 hyperboloid gear双头螺柱studs双万向联轴节 constant-velocity (or do

54、uble) universal joint双摇杆机构 double rocker mechanism双转块机构Oldham coupling双列轴承 double row bearing双向推力轴承 double-direct ion thrust beari ng松边 slack-side顺时针clockwise瞬心、instantaneouscenter死点 dead point四杆机构 four-bar linkage速度 velocity速度不均匀(波动)系数 coefficient of speed fluctuation速度波动 speed fluctuation速度曲线 velo

55、city diagram速度瞬心 instantaneouscenter of velocity调心球轴承 self-aligning ball bearing塔轮 step pulley踏板pedal台钳、虎钳vice太阳轮sun gear弹性滑动 elasticity sliding motion弹性联轴器 elastic coupling ; flexible coupling弹性套柱销联轴器 rubber-cushi oned sleeve beari ng coupli ng套筒sleeve梯形螺纹 acme thread form特殊运动链 special kinematic ch

56、ain特性 characteristics替代机构 equivale nt mecha nism调节 modulation, regulation调心滚子轴承 self-aligning roller bearing调心轴承 self-aligning bearing调速 speed governing调速电动机 adjustable speed motors 调速系统 speed control system 调压调速 variable voltage control 调速器 regulator, governor 铁磁流体密圭寸ferrofluid seal 停车阶段 stopping p

57、hase 停歇dwell同步带 synchronous belt同步带传动 synchronous belt drive凸的，凸面体 convex凸轮cam凸轮倒置机构 inv erse cam mecha nism 凸轮机构 cam , cam mechanism凸轮廓线cam profile凸轮廓线绘制layout of cam profile 凸轮理论廓线pitch curve 凸缘联轴器 flange coupling图册、图谱atlas图解法 graphical method推程rise推力球轴承 thrust ball bearing 推力轴承 thrust bearing 退刀槽

58、 tool withdrawal groove 退火anneal陀螺仪gyroscopeV 带 V belt夕卜力 external force夕卜圈outer ring夕卜形尺寸 boundary dimension万向联轴器 Hooks coupling ; universal coupling 夕卜齿轮external gear弯曲应力 beading stress弯矩 bending moment腕部wrist往复移动 reciprocating motion往复式密圭寸 reciprocating seal网上设计 on-net design, OND微动螺旋机构 different

59、ial screw mechanism 位移 displacement位移曲线 displacementdiagram位姿 pose , position and orientation稳定运转阶段 steady motion period稳健设计 robust design向心轴承 radial bearing蜗杆worm蜗杆传动机构 worm gearing蜗杆头数 number of threads蜗杆直径系数diametral quotient蜗杆蜗轮机构 worm and worm gear蜗杆形凸轮步进机构 worm cam in terval mecha nism蜗杆旋向 han

60、ds of worm蜗轮 worm gear涡圈形盘簧 power spring无级变速装置 steplessspeed changesdevices无穷大infinite系杆 crank arm, planet carrier现场平衡 field balancing向心力 centrifugal force相对速度 relative velocity相对运动 relative motion相对间隙relative gap象限 quadra nt橡皮泥 plasticine细牙螺纹fine threads销pin消耗 consumption小齿轮pinion小径 minor diameter橡