Cobalt - based alloy is a kind of important materials used in elevated temperature.钴基合金是一种重要的高温材料.Recovery of cobalt from Co - Ni residue in zinc hydrometallurgy has been studied.研究了从湿法炼锌净化钴镍渣中回收有价金属....a woman in a soft...
The bang came suddenly, echoing across the buildings, shattering glass.突如其来的一声巨响在建筑物间回荡着，震碎了玻璃。The cave was echoing with shouts.山洞内回荡着叫喊声.Then he heard a piercing scream echoing down the deep well, ending in a dull, dead...
He was the quintessence of all that Eva most deeply loathed.他是伊娃最深恶痛绝的那种人中的典型。Could there have been a slight tinge of envy in Eva's voice?伊娃的声音里可能会有一丝羡慕吗？Eva gossiped with Sarah.伊娃与萨拉在闲聊。Eva pulled over a chair and ...