中心元 meaning in Chinese

central element

The dublin core metadata element set
都柏淋中心元数据元件装置
Also , the first district cyber centre " yuen long pok oi community cyber centre " with 19 pcs was opened for public use in december 2002
此外，首间地区数码中心元朗博爱社区数码中心于二零零二年十二月投入服务，内设19部个人电脑供市民使用。
The main results in this paper as follow : 1 let r is semiprime ring with characteristi2 and z ( r ) be the center of r , if r satisfies one of the following condtions , then r is commutative
其中z ( r )表示r的中心(下同) 。二、关于半质环的中心元与交换性有下面结论： 1 、设a r ，且2a为非零因子，若对