This requires a trick opposite to the first one-suddenly making an insulator into a conductor. The insulator in question is silicon carbide.
其关键技术与第一个恰好相反，它是将绝缘体迅速转为导体，其中所用的绝缘体是金刚砂。
2
By the glow of a small carbide lamp one could distinguish a dozen human figures gathered around three or four tables.
借着电石灯的光亮，可以看到十几个人体聚集在三四张桌子的周围。
3
He first studied physics at university before being persuaded by his father, a senior judge and a noted Sanskrit scholar, to work for Union Carbide, a chemicals company.