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1、单位换算以下各表列出各种单位换算关系。各表中SI单位均印制粗体。长度厘米米千米寸尺哩1厘米=110-210-50.39373.28110-26.21410-61米=100110-339.373.2816.21410-41千米=105100013.93710432810.62141寸=2.5402.54010-22.54010-518.33310-21.57810-51尺=30.480.30483.04810-41211.89410-41哩=1.60910516091.6096.336104528011埃()=10-10米1光年=9.46001012千米1码=3尺1x单位=10-13米1秒差距=
2、3.0841013千米1竿(rod)=16.5尺1噚=6尺1密耳(mil)=10-3寸 1海里=1852米=1.151哩=6076尺面积米2厘米2尺2寸2圆密耳1平方米=110410.7615501.9741091平方厘米=10-411.07610-30.15501.9741051平方尺=9.29010-2929.011441.8331081 平方寸=6.45210-46.4526.94410-31 1.2731061圆密耳=5.06710-105.06710-65.45410-97.85410-711平方哩=2.788108尺2=640亩 1亩=43,600尺2 1邦=10-28米2 体积米
3、2厘米3升尺3寸31立方米=1106100035.316.1021041立方厘米=10-611.00010-33.53110-56.10210-21升=1.00010-3100013.53110-261.021立方尺=2.83210-2283210428.32117281立方寸1.63910-516.391.63910-25.78710-411加仑(美)=4夸胶(美)=8品脱(美)=128 唡 (美)=231寸31加仑(英)=277.42寸31升=1千克水在其最大密度时的体积=1000.028厘米3平 面 角弧度转1度=16036001.74510-22.77810-31分=1.66610-2
4、1602.90910-44.63010-51秒=2.77810-41.66710-214.84810-67.71610-71弧度=57.3034382.06310510.15921转=3602.161041.2961066.2831立体角1球=4球面度=12.57球面度质量 唡、磅和吨本不是质量单位,但常用作质量单位。例如,当写1千克“=”2.205磅时,意即在标准重力状况时(g=9.80665米/秒2)一千克是重2.205磅的质量。克千克斯勒格统一原子质量单位唡磅吨1克=1千克=1斯勒格=1统一原子质量单位=10.0016.85210-56.02410233.52710-22.20510-3
5、1.10210-6100016.85210-26.024102635.272.2051.10210-31.45910414.5918.7891027514.832.171.60910-21.66010-241.1271.13710-2815.85510-263.66010-271.82910-301两1磅1吨28.352.83510-21.94310-31.708102516.25010-23.12510-5453.60.45363.10310-22.73210261610.00059.072105907.262.165.46510293.210420001密度磅/尺3和磅/寸3是重量密度,与
6、质量密度的量纲不同,参阅质量表前的注。斯勒格/尺3千克/米3克/厘米3磅/尺3磅/寸31斯勒格/尺3= 1千克/米3=1克/厘米3=1 1.94010-31.940515.4 110000.5154 0.001132.17 6.24310-262.431.86210-2 3.61310-53.61310-21磅/尺3= 1磅/寸3=3.10810-2 53.7116.02 2.7681041.60210-2 27.281 17285.78710-4 1时间年月小时分秒1年=1365.28.7661035.2591053.1561071日=2.73810-312414408.6401041小时=
7、1.14110-44.16710-216036001分=1.90110-46.94410-41.66710-21601秒=3.16910-81.15710-52.77810-41.66710-21速度尺/秒千米/小时米/秒哩/小时厘米/秒节1尺/秒=11.0970.30480.681830.480.59251千米/小时=0.911310.27780.621427.780.59251米/秒=3.2813.612.2371001.9441哩/小时=1.4671.6090.4470144.700.86891厘米/秒=3.28110-23.610-20.012.23710-211.94410-21节=
8、1.6881.8520.51441.15151.441力克力和千克力本汪是力的单位,但常用作(尤其在化学中)力的单位。例如,若写1克力“=”980.7达因,意即在标准重力状况时(g=9.80665米/秒2)一克质量承受980.7达因的力。达因牛顿磅磅达克力千克力1达因110-52.24810-67.23310-51.02010-31.02010-e1牛顿10510.22487.233102.00.10201磅4.4481054.448132.17453.60.45361磅达1.3831040.13833.10810-2114.101.41010-21克力980.79.80710-32.2051
9、0-37.09310-210.0011千克力9.8071059.8072.20570.93100011千克力=9.80665牛顿 1磅=32.17398磅达压力大气压达因/厘米2寸水柱厘米水银柱牛顿/米2磅/寸2磅/尺21大气压=11.013106406.8761.01310514.7021161达因/厘米2=9.86910-714.01510-47.50110-50.11.45010-52.08910-31寸水柱在 4C*=2.45810-2249110.1868249.13.61310-25.2021厘米水银柱在0C*=1.31610-21.3331045.353113330.193427
10、.851牛顿/米2=9.86910-6104.01510-37.50110-411.45010-42.0891021磅/寸2=6.80510-26.89510427.685.1716.89510-311441磅/尺2=4.72510-44.78.80.19223.59110-247.886.94410-31*此处重力加速度为标准值9.80665米/秒2 1巴=106达因/厘米2 毫巴=103达因/厘米2功率Btu/小时尺磅/秒马 力卡/秒千瓦瓦特1Btu/小时=10.21613.92910-47.00010-22.93010-40.29301磅尺/秒=4.62811.81810-30.3239
11、1.35610-31.3561马力=25455501178.20.7457745.71卡/秒=14.293.0875.61310-314.18610-34.1861千瓦=3413737.61.341238.9110001瓦特=3.4130.73761.34110-30.23890.0011Btu为英热量单位(=252卡)电荷电磁库仑安培小时库仑静库仑1电磁库仑=12.77810-3102.99810101安培小时=360136001.07910131库仑=0.12.77810-412.9981091静库仑=3.3610-119.26610-143.33610-1011电子电荷=1.60210-19库仑,电磁系指厘米克秒制电磁单位系,静系指厘米克秒制静电系,下同。电磁量量符号SI(有理MKSA单位系)定义式量 纲名 称符号电 流I基本A安培(ampere)A电动势、电位差,电压VP=IVm2kgS-3A-1伏特(volt)V电 阻RR=V/Im2kgS-3A-2欧姆(ohm)电 导GG=1/Rm-2kg-1S-3A2西门子(sismens)S电 量QQ=ItC=AS库仑(coul