PREFIXES 字首
A multiple of a unit in the International System is formed by adding a prefix to the name of that unit. The prefixes change the magnitude of the unit by orders often from 10 18 to 10 -18.
经由在单位名称前面加一字首构成国际制度单位的倍数。字首通常按顺序从10的18次幂到10的-18次幂改变单位的量。
PREFIXSYMBOL MULTIPLYING FACTOR
字首符号乘法因数
exa-代表10的18次幂E10的18次幂 = 1,000,000,000,000,000,000
peta-代表10的15次幂P10的15次幂 = 1,000,000,000,000,000
tera-代表"万亿"T10的12次幂 = 1,000,000,000,000
giga-代表"十亿"G10的9次幂 = 1,000,000,000
mega-代表"百万"M10的6次幂 = 1,000,000
kilo-代表"千"K10的3次幂 = 1,000
hecto-代表"百"h10的2次幂 = 100
deca-代表"十"da10 = 10
deci-代表"十分之一"d10的-1次幂 = 0.1
centi-代表"百分之一"c10的-2次幂 = 0.01
milli-代表"千分之一"m10的-3次幂 = 0.001
micro-代表"百万分之一" μ10的-6次幂 = 0.000,001
nano-代表"毫微"n10的-9次幂 = 0.000,000,001
pico-代表"万亿分之一"p10的-12次幂 = 0.000,000,000,001
femto-代表"千万亿分之一" f10的 15次幂 = 0.000,000,000,000,001
atto-代表"百亿亿分之一" a10的 18次幂 = 0.000,000,000,000,000,001