...a billionth of a second.十亿分之一秒UNIT NINETEENA nanometer is one billionth of a meter ( 3~4 atoms wide 2 ).一纳米即十亿分之一米 ( 可以排列三四个原子 ).The centimeter - gram - second electromagnetic unit of inductance, equal to one billiont...
I do not give a fig what society thinks.我一点儿也不在乎社会怎么想。The design of the most important part of micrometer can be seen in Fig . 2 - 28 .测微器最重要部分的设计见图 2-28.Now a nude December fig branch grates against the window.一根十二月里的光秃...