We can only speculate at the core composition of mercury, but it has a very high density for its radius so it is likely to have a large metallic core accounting for most of its mass.
我们只能推测在汞的核心成分，但它有它的半径密度非常高，所以很可能有一个大的金属的群众最核心的会计。
The mineral composition is simple, only with original metallic minerals antimonite and pyrite, gangue minerals quartz, calcite and a few barites, all in the fissure or hole of the rock.
矿物成分简单，原生金属矿物只有辉锑矿和黄铁矿，脉石矿物有石英、方解石及少量重晶石，它们均充填在岩石的缝洞中。
Introduced factors and so on wire rod chemical composition, billet low-powered tissues, non-metallic inclusions influence to the B-grade steel wire for cotton packaging of drawing performance.
介绍了线材的化学成分、钢坯低倍组织、非金属夹杂物等因素对B级棉花打包钢丝拉拔性能的影响。
应用推荐