The 5-Second Trick For Crystal
Not all crystals are equally crystalline. There tend to be impurities, and the ionic & covalent in between molecules can develop vastly different constructions from the identical product. An incredible illustration of this are diamonds and graphene.③、粗抛光：是将模具压出之毛胚，以金刚石盘直接磨出成品之刻线。④、