化学及化工专业英语词汇1

化学及化工专业词汇英语翻译j-o2019整理的各行业企管，经济，房产，策划，方案等工作范文，希望你用得上，不足之处请指正j acid j 酸jacket 夹套jacket cooling 套管冷却jacob cell 雅讣电池jacobsen rearrangement 雅可布森重排jade 硬玉jadeite 硬玉jalap 贾拉普japan 黑漆jasmin oil 茉莉花油jasmone 茉莉酮jasper 碧玉javel water 爪维尔水jaw breaker 腭式碎石机jaw crusher 腭式碎石机jelly 凝胶jena glass 耶拿玻璃jervine 介藜芦胺jet 喷射jet blower 喷射式通风机jet compressor 喷气压缩机jet condenser 喷水凝汽器jet fuel 喷气发动机燃料jet pump 喷射泵jewel 宝石jig sieve 振动筛joule 焦耳joule effect 焦耳效应joule thomson effect 焦耳 汤姆森效应joules law 焦耳定律juglone 胡桃酮julian tube 凯撒管junkers calorimeter 容克量热计jute 黄麻juvenile gas 初生气juvenile water 初生水k acid k 酸k meson k 介子kali fusion 钾熔融kalimeter 碳酸计kallikrein 舒血管素kanamycin 卡那霉素kaolin 瓷土kaolin clay 高岭土kaolinite 高岭石kaolinization 高岭土化kapok oil 爪哇木棉油karaya gum 剌梧桐屎karl fischer method 卡尔 费歇尔法karl fischers reagent 费氏试剂karyokinesis 核分裂karyolysis 核溶解karyoplasm 核质kata thermometer 卡他温度计kauri butanol value 贝壳杉脂丁醇值kauri gum 栲里松脂kauri resin 栲里松脂keenes cement 金纳水泥keesom relationship 基朔关系kelp 海草灰kelvins temperature 开氏温度keratin 角蛋白keratin plastics 角质塑料kermes 胭脂虫粉kermesite 红锑矿kerogen 油母质kerosene 煤油kerosine 煤油ketene 乙烯酮ketene lamp 乙烯酮灯ketimine 酮亚胺keto acid 酮酸keto enol tautomerism 酮 烯醇互变异构keto form 酮式ketoadipic acid 酮己二酸ketoalcohol 酮醇ketocapric acid 己酮酸ketoglutaric acid 氧代戊二酸ketoheptose 庚酮糖ketol 酮醇ketone 酮ketone decomposition 酮分解ketone group 酮基ketone musk 香酮ketone resin 酮尸ketonic ester 酮酯ketonisation 酮化ketose 酮糖ketoxime 酮肟key component 限界组分kieselguhr 硅藻土kieserite 水镁矾killed steel 镇静钢kiln 炉kinase 激酶kindling temperature 着火温度kinematic viscosity 运动粘度kinematical theory of diffraction 运动学的衍射论kinescope 显象管kinetic chain length 动力学链长kinetic current 反应电流kinetic energy 动能kinetic friction 动摩擦kinetic molecular theory 分子运动理论kinetic theory 动力学理论kinetic theory of gases 气体分子运动论kinetics of polymerization 聚合动力学kinetin 激动素kings yellow 雄黄kipps apparatus 基普气发生器kipps gas generator 基普气发生器kirchhoffs law 基尔霍夫定律kitol 鲸醇kjeldahl flask 基耶达尔氏测氮瓶kjeldahl method 基耶达尔法kjellin furnace 开林电炉kneader 捏和机kneading 捏和knife edge of balance 天平的支棱knock intensity 爆震强度knocking 爆震knoevenagel reaction 诺文葛耳反应knorr synthesis 克诺尔合成法kochs acid 柯赫酸kojic acid 曲酸kolbe schmitt reaction 科尔伯 施密特反应korean paper 朝鲜纸kotoite 粒镁硼石kozeny carmans equation 康采尼 卡曼方程krafft point 克拉夫特点kraft paper 牛皮纸kraft pulp 牛皮纸浆krypton 氪kyanite 蓝晶石labarraques solution 拉巴腊克氏溶液labelled atom 示踪原子labile equilibrium 不稳平衡labile form 不稳形lability 不稳定性laboratory 实验室laboratory scale 实验室规模laboratory test 实验室试验lac 紫胶lac dye 紫胶染料lachrymator 催泪剂lacmoid 间苯二酚蓝lacquer 漆lacquer diluent 漆稀释剂lacquer enamel 瓷漆lacquering 涂漆lactacidogen 乳酸精lactalbumin 乳清蛋白lactam 乳胺lactamide 乳酸胺lactase 乳糖酶lactate 乳酸盐lactic acid 乳酸lactic acid bacteria 乳酸菌lactic acid fermentation 乳酸发酵lactic anhydride 乳酸酐lactide 交酯lactim 内酰亚胺lactobutyrometer 乳脂计lactoflavin 乳黄素lactogenic hormone 促乳泌素lactoglobulin 乳球朊lactometer 乳比重计lactone 内酯lactone bond 内酯键lactonic ring 内酯环lactonitrile 乳腈lactonization 内酯化lactophenine 乳吩咛胺lactoscope 乳酪计lactose 乳糖ladder polymer 梯形聚合物lagranges equation of motion 拉格朗日运动方程lagranges method of undetermined multipliers 拉格朗日不定乘子法laguerrs polynomial 拉盖尔多项式lake 色淀颜料lake red c 色淀红 clalande cell 拉兰电池lambert beers law 朗伯波特 比尔定律lamberts law 朗伯特定律lamella 薄板lamina 薄板laminar film 片状膜laminar flow 层流laminar furnace 层怜laminate 层压材料laminated coal 叠层煤laminated glass 夹层玻璃laminated paper 层压纸laminated wood 胶合板lamination 层压lamp 灯lamp black 灯黑lamp oil 灯油lamp test 灯泡试验lanatoside 毛花甙langbeinite 无水钾镁矾langmuirs adsorption isotherm 朗格缪尔吸附等温线lanolin 羊毛脂lanoline 羊毛脂lanosterol 羊毛醇lanthanide 镧系元素lanthanide contraction 镧系收缩lanthanoid 镧系元素lanthanum 镧lanthanum acetate 乙酸镧lanthanum bromate 溴酸镧lanthanum bromide 溴化镧lanthanum carbonate 碳酸镧lanthanum chloride 氯化镧lanthanum oxide 氧化镧lanthionine 羊毛硫氨酸lap welding 叠式焊接lapachoic acid 拉帕醇lapachol 拉帕醇lapidification 石化酌laplace equation 拉普拉斯方程laplace transformation 拉普拉斯变换lard 猪脂large aromatic molecule 大芳香族分子large scale gas chromatography 制备级气相色谱法laser 激光last heat of dissolution 溶解终热latence 潜伏latency 潜伏latent catalyst 潜伏催化剂latent heat 潜热latent heat of fusion 熔化潜热latent heat of sublimation 升华热latent image 潜像latent period 潜伏期latent valency 潜化合价lateral axis 横轴线lateral chain 侧链lateral face 侧面lateral magnification 横放大率lateral secretion 侧分泌laterite 红土latex 胶乳latex cement 胶乳结合剂latex paint 胶乳漆latex thickener 胶乳增稠剂latexometer 胶乳比重计lather 肥皂泡lathering number 起泡值lathering soap 泡沫lattice constant 晶格常数lattice defect 点阵缺陷lattice distance 晶格间距lattice energy 晶格能lattice model 点阵模型lattice plane 晶格面laudanidine 劳丹尼定laudanine 劳丹碱laudanosine 劳丹素laue method 劳厄法laue photograph 劳厄照相laughing gas 笑气laundry soap 家用皂lauraldehyde 月桂醛laurate 月桂酸盐laurel 月桂laurel oil 月桂油lauric acid 月桂酸lauroleate 月桂酸盐lauroleic acid 月桂烯酸lauroyl chloride 月桂酰氯lauroyl peroxide 过氧化月桂酰lauryl alcohol 月桂醇lauryl chloride 月桂基氯lauryl mercaptan 月桂硫醇lauryl methacrylate 甲基丙烯酸月桂酯lava 熔岩lavazeck viscometer 拉巴切克粘度计lavender oil 熏衣草油lavender water 熏衣水law of chemical equivalent 化学当量定律law of conservation and conversion of energy 能量守恒及能量转换定律law of conservation of energy 能量守恒律law of conservation of mass 质量守恒定律law of conservation of momentum 动量守恒定律law of constant proportion 定比律law of corresponding states 对应态原理law of definite proportion 定比律law of equipartition of energy 能量均分律law of gaseous reaction 气体反应定律law of ideal gases 理想气体定律law of independent ionic mobilities 独立离子怜定律law of ionic strength 离子强度定律law of isomorphism 类质同晶定律law of mass action 质量酌定律law of multiple proportions 倍比律law of partition 分配定律law of photochemical equivalent 光化学当量定律law of radioactive decay 放射性蜕变定律law of reciprocal proportion 互比定律law of reciprocity 互反律law of velocity distribution 速度分布定律lawrencium 铹laxative 轻泻剂layer built cell 积层电池layer lattice 层形点阵layer structure 层状构造lazulite 天蓝石le chatelier brauns principle 勒夏特利埃 布劳董理leachability 可浸出性leachate 浸出液leaching 浸析leaching agent 溶浸剂lead 铅lead accumulator 铅蓄电池lead acetate 醋酸铅lead arsenate 砷酸铅lead azide 叠氮化铅lead bath 铅浴lead carbonate 碳酸铅lead chamber 铅室lead chamber process 铅室法lead chloride 氯化铅lead chromate 铬酸铅lead compound 铅化合物lead cyanamide 氰氨化铅lead cyanide 氰化铅lead dioxide 二氧化铅lead glance 方铅矿lead glass 铅玻璃lead glaze 铅釉lead hydrogen citrate 氢柠檬酸铅lead hydroxide 氢氧化铅lead lining 铅内衬lead linoleate 亚油酸铅lead molybdate 钼酸铅lead nitrate 硝酸铅lead oxide 氧化铅lead paper 乙酸铅试纸lead peroxide 过氧化铅lead poisoning 铅中毒lead resinate 尸酸铅lead silicate 硅酸铅lead stearate 硬脂酸铅lead storage battery 铅蓄电池lead suboxide 一氧化二铅lead sulfate 硫酸铅lead sulfide 硫化铅lead susceptibility 受铅性lead telluride 碲化铅lead tetraacetate 醋酸高铅lead tetrachloride 四氯化铅lead tungstate 钨酸铅lead vanadate 钒酸铅leaded gasoline 加铅汽油leaf condenser 箔电容器leaf filter 叶片式过滤器leak detector 漏电指示器leak test 泄漏试验leakage 泄漏leakage current 漏电流lean coal 贫煤lean gas 贫气lean lime 贫石灰leather 皮革leather substitute 人造革lecithase 卵磷脂酶lecithin 卵磷脂lecithinase 卵磷脂酯leclanche cell 勒克朗谢电池ledeburite 菜德布尔体lederer manasse reaction 菜德勒 曼讷斯反应legumin 豆球蛋白lehre 退火炉lemon oil 柠檬油lemongrass oil 柠檬草油lenacil 环草定length 长度lens 透镜lenticular film 凹凸式胶片leonite 钾镁矾lepidine 勒皮啶lepidolite 鳞云母lethal dose 致死量leucic acid 白氨酸leucine 白氨酸leucite 白榴石leuckart reaction 洛卡特氐反应leucoalizarin 去氧茜素leucobase 路易克碱leucocompound 无色化合物leucocyte 白血球leucocytolysin 白细胞溶素leucoscope 光学高温计leucosol 白色溶胶levan 果聚糖level dyeing 均匀染色level gage 液面计level meter 液面仪leveling 均匀染色leveling agent 匀染剂leveling tube 水准管levigation 水磨levo form 左旋体levo rotary matter 左旋性物质levorotation 左旋性levorotatory compound 左旋化合物levulinaldehyde 乙酰丙醛levulinic acid 乙酰丙酸levulosan 左旋聚糖levulose 果糖lewis langmuirs theory of valency 路易斯 兰格穆尔原子价理论lewisite 路易氏气liberation 游离lichen starch 地衣多糖lichenase 地衣聚糖酶lichenin 地衣多糖licopene 茄玉红lidocaine 利多卡因liebermanns reaction 李伯曼反应liebig condenser 李比希氏冷凝器liesegang ring 李四光环life of decay 半衰期lifetime 寿命lift 水头ligancy 配位数ligand 配位体ligand field 配位场ligand field absorption band 配位场吸收带ligand field theory 配位场理论ligand membrane 配位体膜ligand migration reaction 配位体移动反应light alloy 轻合金light burned magnesia 轻质煅烧镁氧light emitting diode 发光二极管light end 轻馏分light fastness 耐光性light filter 滤光器滤光片light fire brick 轻质耐火砖light fog 光灰雾light induced proton pump 光诱致质子泵light metal 轻金属light meter 曝光计light oil 轻油light pressure 光压light quantum 光子light rare earth element 轻稀土元素light resistance 耐光性light ruby silver 淡红银矿light scattering method 光散射法light scattering photometer 光散射光度计light sensitivity 感光度light soils 轻质土light source 光源light velocity 光速light weight concrete 轻质混凝土lignification 木质化lignin 木素lignocaine 利多卡因lignocellulose 木质纤维素lignoceric acid 廿四酸lignosulfonic acid 木素磺酸ligroin 里格苦因lime 石灰lime burning 煅烧石灰lime cream 石灰乳lime hydrate 消石灰lime kiln 石灰窑lime kilning 煅烧石灰lime milk 石灰乳lime mortar 石灰浆lime nitrate 硝酸钙lime nitrogen 石灰氮lime oil 梨莓油lime pozzolanic cement 石灰火山灰水泥lime rosin 石灰松香lime salpeter 硝酸钙lime saturation degree 石灰饱和度lime silica ratio 石灰硅石比lime slag cement 石灰炉渣水泥lime slaker 石灰熟化器lime soap 石灰皂lime sulfur mixture 石硫合剂lime water 石灰水limestone 石灰石liming 用石灰处理limit dextrin 有限糊精limit of error 误差极限limit of identification 证实限度limit of inflammability 可燃限度limiting concentration 极限浓度limiting current 极限电流limiting current density 极限电淋度limiting value 极限值limonene 二戊烯limonite 褐铁矿limpidity 透迷linaloe oil 沉香油linalool 里哪醇linalyl acetate 醋酸里哪酯lindane 林丹linde air liquefier 林德空气液化器line density 线密度line spectrum 线性光谱line width 线宽度linear accelerator 直线加速器linear condensation polymer 线型缩合聚合物linear differential equation 线性微分方程linear expansion 线膨胀linear expansivity 线膨胀性linear macromolecule 线型大分子linear molecule 线型分子linear ordinary differential equation of first order 一阶线性常微分方程linear polymer 线状聚合物linear transformation 线性变换linear viscoelasticity 线性粘弹性lining 内衬lining brick 砌壁砖linkage 键合linking 键合linnaeite 硫钴矿linoleic acid 亚麻仁油酸linolenic acid 亚麻酸linoleum 油地毡linoleum cement 油毡胶粘剂linoleum oil 漆布油linolic acid 亚麻仁油酸linolin 亚麻精linoxylin 氧化亚麻油linoxyn 氧化亚麻油linseed oil 亚麻子油lint 皮棉linter 棉绒lipase 脂肪酶lipid 脂质lipid metabolism 脂类代谢lipid peroxide 脂类过氧化物lipoamino acid 脂氨基酸lipochrome 脂色素lipoic acid 硫辛酸lipolysis 脂类分解lipoprotein 脂蛋白liposome 脂质体lipoxidase 脂肪氧化酶liquefaction 液化liquefaction of air 空气液化liquefaction of coal 煤的液化liquefied gas 液化气liquefied natural gas 液化天然气liquefied petroleum gas 液化石油气liquid 液体liquid air 液态空气liquid ammonia 液态氨liquid calorimeter 液体量热计liquid carbon dioxide 液态二氧化碳liquid chlorine 液态氯liquid chromatography 液相谱liquid cooling 液体冷却liquid crystal 液晶liquid crystalline polymers 液晶聚合物liquid culture 液体培养liquid cyclone 湿式旋风除尘器liquid drier 液体催干剂liquid drop model 液滴模型liquid fertilizer 液体肥料liquid film technology 液膜技术liquid filter 液体过滤器liquid fuel 液体燃料liquid gold 金水liquid grease 液体钙基脂liquid heat exchanger 液体热交换器liquid hydrocarbon 液烃liquid insulator 液体绝缘体liquid ion exchanger 液体离子交换剂liquid junction cell 液体接界电池liquid junction potential 液体接界电势liquid level indicator 液面仪liquid liquid chromatography 液 液色谱法liquid liquid extraction 液 液提取liquid liquid partition chromatography 液 液分配色谱法liquid manometer 液体压力计liquid medium 液体培养基liquid membrane 液体膜liquid nitrogen 液态氮liquid oxygen 液态氧liquid oxygen explosive 液氧炸药liquid paraffin 液体石蜡liquid phase 液相liquid phase cracking 液相分解liquid phase cracking process 液相过程liquid phase hydrogenation 液相氢化liquid rubber 液态橡胶liquid seal 液封liquid soap 液体肥皂liquid solid chemical reaction 液 固化学反应liquid solid equilibrium 固 液平衡liquid sulfur dioxide benzene process 液态二氧化硫 苯抽提过程liquid thermometer 液体温度计liquidus 液线liquor ratio 液比liquorice 甘草litharge 密陀僧lithia porcelain 氧化锂瓷lithium 锂lithium aluminium hydride 氢化铝锂lithium aluminium hydride reduction 氢化铝锂还原lithium carbonate 碳酸锂lithium chlorate 氯酸锂lithium chloride 氯化锂lithium hydroxide 氢氧化锂lithium nitrate 硝酸锂lithium oxide 氧化锂lithium silicate 硅酸锂lithium sulfate 硫酸锂lithium tartrate 酒石酸锂lithochemistry 岩石化学lithocholic acid 石胆酸lithogeochemistry 岩石地球化学lithographic ink 石印墨lithographic varnish 石印清漆lithography 石印术lithol red 立遂lithophile element 亲岩元素lithopone 立德粉lithosphere 岩石圈litmus 石蕊litmus paper 石蕊纸live steam 直接蒸汽liver oil 肝油living coordination polymerization 活性配位聚合living polymer 活性聚合物lixiviation 浸析load test 负荷试验loading hopper 进料漏斗loading material of rubber 橡胶填料loam 亚粘土lobeline 洛贝林local analysis 局部分析local cell 局部电池local corrosion 局部腐蚀local current 局部电流local equilibrium 局部平衡local magnetic moment 局部磁矩locally limit theorem 局部极限定理lode 矿脉loess 黄土log mean temperature difference 对数平均温差logarithmic function 对数函数logarithmic mean 对数平均logic element 逻辑元件logical circuit 逻辑电路logwood 苏木lone pair 非共有电子对long flame coal 长焰煤long oil varnish 长油性清漆long tube vertical evaporator 长管竖式蒸发器longitudinal flow reactor 纵向连续反应器loop strength ratio 钩接强力比lorentzs force 洛伦兹力lorenz lorentzs formula 洛伦茨 洛伦兹公式loretin 试铁灵loss 损失loss angle 损耗角loss of weight 失重lossen reaction 洛森反应lost heat 废热loudness 音量lovibond tintometer 拉维邦德油品色度计low alloy 低合金low angle scattering of x ray x线小角散射low energy neutron 低能中子low expansion glass 低膨胀玻璃low fired porcelain 低温瓷器low frequency induction furnace 低频感应电炉low grade bituminous coal 低级沥青炭low heat cement 低热水泥low melting glass 低熔点玻璃low molecular weight hydrocarbon 低分子量烃low polymer 低聚物low pressure gauge 低压计low pressure molding 低压模塑low pressure resin 低压尸low pressure tyre 低压轮胎low temperature carbonization 低温干馏low temperature coke 低温焦炭low temperature fractionation 低温精馏low temperature polymerization 低温聚合low temperature processing 低温分离法low temperature resistance 耐寒性low temperature tar 低温焦油lower calorific power 低热值lower calorific value 低热值lower homologue 低级同系物lowering of melting point 熔点降低loxygen 液氧lubricant 润滑剂lubricating grease 润滑脂lubricating oil 润滑油lubricating property 润滑性lubrication 润滑lucas reagent 卢卡斯试药luciferase 荧光素酶luciferin 荧虫光素lumen 流luminance temperature 发光温度luminescence 发光luminescence analysis 发光分析luminescence center 发光中心luminescent dye 荧光染料luminescent lamp 荧光灯luminescent plastics 发光塑料luminescent screen 荧光屏luminol 鲁米诺luminophore 发光体luminosity 亮度luminous flame 光焰luminous flux 光束luminous paint 发光油漆luminous pigment 发光颜料lumisterol 光照甾醇lump coal 块煤lump coke 块焦炭lunges test 伦格试验lupanine 羽扇烷宁lupinidine 司巴丁lurgi low temperature carbonization oven 鲁奇的低温焦化烘炉luster 光泽lusterless paint 无光漆lutecium 镥lutein 叶黄素luteo salt 黄络盐luteol 黄示醇luteolin 黄色素lutetium 镥lutidine 卢剔啶lux 勒克斯luxmeter 照度计lyase 裂合酶lycopene 番茄烯lycopin 番茄烯lycopodium 石松子lycopodium spores 石松子lycoremine 加兰他敏lye 碱液lyogel 液凝胶lyolysis 液解lyophilic 亲液的lyophilic colloid 亲液胶体lyophilic polymer 亲液性聚合体lyophilization 冻干lyophobic 疏水的lyophobic colloid 蔬液胶体lyosol 液溶胶lyotropic liquid crystal 易溶液晶lyotropic series 感胶离子序列lysergic acid 赖瑟酸lysine 赖氨酸lysol 来苏lysosomotropic drug 擒酶体药lysozyme 溶菌酶lysyloxidase 赖氨酰氧化酶lyxonic acid 来苏糖酸lyxose 来苏糖m acid m 酸m.w. 分子量macaroni rayon 空心人造丝macassar gum 琼脂mace oil 肉豆蔻油maceration 浸渍machine bleaching 机械漂白machine dyeing 机凭色machine oil 机油machine printing 机啤花macle 双晶macleod gage 麦克劳计maclurin 桑橙素macroanalysis 常量分析macrochemistry 常量化学macrocrystal 大晶体macrogeochemistry 宏观地球化学macroglobulin 巨球蛋白macromolecular chemistry 大分子化学macromolecular colloid 高分子胶质macromolecular compound 高分子化合物macromolecular grating 大分子格子macromolecular rupture 大分子破裂macromolecule 大分子macropolymerization 巨聚合macroscopic structure 宏观结构macrosis 巨大macrostate 宏观状态macrostructure 宏观结构macula lutea 黄斑madder lake 茜草色淀madder red 茜草红magenta 品红色magic mirror 半透玫magma 岩浆magma glassashes 岩浆玻璃灰magmatic assimilation 岩浆同化酌magmatic ore 岩浆矿石magmatic water 岩浆水magnalium 镁铝合金magnesia 氧化镁magnesia brick 镁砖magnesia cement 镁氧水泥magnesia clinker 镁熔块magnesia mixture 镁氧混合剂magnesia porcelain 镁质瓷器magnesia portland cement 氧化镁普通水泥magnesite 菱镁矿magnesite chrome brick 铬镁砖magnesium 镁magnesium acetate 乙酸镁magnesium borate 硼酸镁magnesium calcium carbonate 碳酸镁钙magnesium cell 镁电池magnesium chloride 氯化镁magnesium hydrate 氢氧化镁magnesium hydroxide 氢氧化镁magnesium nitrate 硝酸镁magnesium oxide 氧化镁magnesium peroxide 过氧化镁magnesium powder 镁细粉magnesium sulfate 硫酸镁magneson 试镁灵magnet 磁铁magnetic analysis 磁力分析magnetic anisotropy 磁蛤异性magnetic crystal group 磁晶群magnetic crystal structure 磁晶体结构magnetic field 磁场magnetic filter 磁性过滤器magnetic induction 磁感应magnetic iron ore 磁铁矿magnetic iron oxide 磁性氧化铁magnetic needle 磁针magnetic permeability 磁导率magnetic quantum number 磁量子数magnetic relaxation 磁性弛豫magnetic resonance 磁共振magnetic semiconductor 磁性半导体magnetic separator 磁力分离器magnetic stirrer 磁力搅拌器magnetic substance 磁性体magnetic susceptibility 磁化率magnetism 磁magnetite 磁铁矿magnetization 磁化magnetochemical analysis 磁化学分析magnetochemical investigation 磁化学甸magnetochemistry 磁化学magnetometer 磁强计magneton 磁子magnetosonic wave 磁声波magnetron 磁控管magnification 放大率magnifier 放大镜magnifying glass 放大镜main alloying component 合金稚分main constituent 知组分main fermentation 知发酵酌main group 皱main group element 皱元素main reaction