circular-grained graphite是什么意思

用法例句

The other sample was pure single crystal graphite.

5%;另外1种样品是纯的单晶石墨,它们的微晶结构参数La估计在1μm以上,Lc值平均为17。

Research on primary crystal graphite and shrinkage void tendency of heat-resisting malleable nodular graphite castiron;

耐热球墨可锻铸铁的初晶石墨与其缩孔倾向的研究