常用单位换算.doc

常用單位換算1. 長度單位mm(公厘)cm(公分)m(公尺)in(inch吋)ft(foot呎)mm(公厘)10.10.0010.039370.00328cm(公分)1010.010.393710.03281m(公尺)1000100139.3713.28091in(inch吋)25.39952.540.025410.08333ft(foot呎)304.7930.4790.304791212. 面積單位（平方square）cm2m2in2ft2cm210.00010.155010.001076m21000011550.110.7643in26.45140.000645110.006944ft29290.092914413. 體積單位（立方cube）cm3 (cc)l(公升)m3in3ft3cm3 (cc)10.0010.0000010.06102370.0000353l(公升)100010.00161.02374410.0353147m310000001000161023.744094735.3146667in316.3870640.01638710.000016410.0005787ft328316.84659228.31684660.0283168172814. 重量單位g(公克)kg(公斤)t(公噸)lb(pound磅)g(公克)10.0010.0000010.0022046kg(公斤)100010.0012.2046226t(公噸)1000000100012204.6226218lb(pound磅)453.592370.45359240.000453615. 時間單位sec(秒)min(分)hr(h時)day(d天)sec(秒)11.66666666666667E-022.77777777777778E-041.15740740740741E-05min(分)6011.66666666666667E-026.94444444444444E-04hr(時)36006014.16666666666667E-02day(天)8640014402416. 壓力單位MPaKPaPambarbarkg/cm2lb/in2(psi)atm.MPa11E31E61E41010.21.45E20.9869E1KPa1E-311E3101E-21.02E-30.1450.9869E-2Pa1E-61E-311E-21E-51.02E-41.45E-40.9869E-5mbar1E-41E-11E211E-31.02E-21.45E-20.9869E-3bar1E-11E21E51E311.0197214.50.986923kg/cm20.98079.807E19.80665E49.80665E20.980665114.220.967841lb/in2(psi)6.895E-36.8956.895E36.8945E10.068950.070307210.0680462atm0.10131.013E21.013E51.013E31.013251.0337514.717. 流量單位sccml/min(lpm)m3/hm3/minft3/hft3/minsccm11E-30.6E-41E-60.00213.53E-5l/min(lpm)1E310.061E-32.11893.53E-2m3/h1666716.66711.667E535.31650.58861m3/min1E61E3601211935.3165ft3/h471.90.47192.8317E-24.719E-511.667E-2ft3/min2.8317E42.8317E11.69892.8315E-26018. 速度單位cm/secm/secm/minkm/hrft/secmile/hrcm/sec10.010.60.0360.032810.02237m/sec1001603.63.280912.23698m/min1.66670.01666710.060.054680.03728km/hr27.7780.2777816.666710.91130.62138ft/sec30.4790.3047918.28741.0972510.6818mile/hr109.0910.0909165.45453.927243.5791719. 含量單位pptppbppmppt11E31E6ppb1E-311E3ppm1E-61E-3110. 科學記號1E510000 应为1000001E-30.01 （1/100） 应为0.0011E310001E-50.00001 （1/100000）1E1101E-70.0000001 （1/10000000）1E011E-90.000000001（1/1000000000）备注：E为Exponent指数（幂）11. 漏率單位Pa.m3/storr.l/smbar.l/satm.cc/sPa.m3/s Pa.l/s117.50.10.019.87torr.l/s0.13311.331.32mbar.l/s101000.75110.987atm.cc/s0.1010.761.011备注: 因漏率的定义是一公升容器内的气体，经过一段时间后容器内气体压力发生的变化。时间以秒为定义单位，压力则可以为Pa, torr, mbar或atm。是以，漏率以Pa.l/s (Pa.m3/s), torr.l/s, mbar.l/s or atm.cc/s为单位。torr.l/s, mbar.l/s or atm.cc/s没问题，要注意的是Pa.l/s 或Pa.m3/s，以上表为例，若单位为Pa.l/s则为绿色。流 量Cv值水流量(US gal/min)于60下，流经差压力1pis之阀门而所得出之流量定值。Kv值水流量(L/min)于20下，流经差压力为1kgf/cm2之阀门而所得出之流量定值。So 有效截面积(mm