sis meaning in English
n.
〔美口〕＝sister.
Examples
- The si unit for length is the meter, m .
长度的SI单位是米（m）。 - This system is called the international system of units, abbreviated si .
这种单位制叫国际单位制，缩写为SI。 - The unit of work and energy in the si system is the joule(j) .
在国际单位制（SI）中，功和能的单位是焦耳（J）。 - The si system therefore takes the ampere as one of its fundamental units .
因此，SI制取安培作为它的基本单位之一。