| 释义 |
金刚石jīngāngshí矿物,碳的同素异形体,多为正八面体结晶,纯净的无色透明,有光泽,有极强的折光力,是已知最硬的物质。用做高级切削和研磨材料等。{diamond; mineral allotrope of carbon, mostly in regular octahedral crystals, pure, colourless, transparent, shiny, strongly refractive, the hardest known substance, used as a high-grade cutting and abrading material;}也叫also金刚钻{jīngāngzuàn}。 |