1、It comprises XC polymer, YDC LN additive and water soluble weighting agent.
該體系主要由X C聚合物和YDC -LN助劑以及可水溶性加重劑組成。

2、The Study on Strained Si 1-x-y Ge xC y Layers
應(yīng)變層Si_(1-x-y)Ge_xC_y合金研究

3、XC automatic equipment identification system has been successfully used in China railway.
XC型自動設(shè)備識別系統(tǒng)已成功應(yīng)用于中國鐵路。