Silicate minerals are characteristically refractory and difficult to break down.硅酸盐矿物的特点是耐熔和难以分离.refractory metals难熔金属The key to treatment of refractory ores is preoxidation and deleading absorption of carbon on gold.这些方...
Silicate minerals are characteristically refractory and difficult to break down.硅酸盐矿物的特点是耐熔和难以分离.Reflux leads to recurrent or refractory aspiration pneumonia.反流可引起复发的难治的吸入性肺炎.Successive bouts of heart failure are apt to ...
Don't bother chamfering the edges until the end.不用费心管倒角孔的边缘,直到结束.That kind of jealousy doesn't bother me...那种嫉妒我并不在意。I wouldn't want to cause such important people as yourselves any bother.我不想给你们这样的大人物添任何麻...