si system

基本解释

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。
Study has proved that ceramic shell making by Al-Si system refractory materials with main crystal of Mollite or Kaolinite will be the ideal choice for investment casting ductile iron.
研究表明，以莫来石或高岭石为主晶相的铝硅系耐火材料是精铸球铁件的理想选择。
At present, the substantial amount is called the elementary quantity in SI system. This paper just takes the concept…
当前，国际单位制（ SI）以物质的量作为基本量，本文特对其概念进行讨论，并提出了与之配套的计算方法。

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