They use the SI system because so does the rest of the world.

他们使用国际单位制，因为全世界其他地方也都用这个。

youdao

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。

youdao

Aside from the si system, other systems such as CGS and MKS are in use in the study of physics.

在物理学研究中除了国际单位制外，其它如厘米•克•秒和米•千克•秒单位制也使用。

youdao

Now that physicists have entered the yocto-realm in measurements, some are wondering whether it is time to begin to look at new prefixes for the SI system.

ECONOMIST: Scientists measure a few yoctonewtons for the first time

Yotta (1024) remains the largest prefix in the SI system.

ECONOMIST: Scientists measure a few yoctonewtons for the first time

After extensive technical delays and bureaucratic bickering, Siemens (nyse: SI - news - people ) recently installed a computerized system for the L train that allows the line to operate 33 trains per hour, up from 28.

FORBES: Traffic Busters