In graphite sheets, carbon atoms bond together in rings.石墨层中的碳原子相互连接形成碳环。Made from cast iron, it is finished in graphite enamel.它是用铸铁制成，最后在外面搪了一层石墨。A powerful electric current is passed through a piece of graphite.给一块石墨通...
The ore bodies are confined to Yanshanian metamorphosed rhyolite porphyry and felsite.矿体赋存在燕山期变质流纹斑岩、霏细岩中.The caterpillar has metamorphosed into a butterfly.蝎已变成蝴蝶.Circe metamorphosed men into swine.女妖锡西把人变成了猪.A Palaeozo...
The division of Europe into warring blocs produces ever - increasing centrifugal stress.把欧洲分为作战集团产生了越来越大的离心效果.The custom traces to the time of the Warring States.这个风俗可上溯到战国时代.She would willingly forgo a birthday treat if...