水合物结晶中有一定比例水分子成分的固体化合物，其中水分子与晶体的含量为一固定比例 A solid compound containing water molecules combined in a definite ratio as an integral part of the crystal.
盐是从海水中结晶出来的，这被视为一种物理变化。 Salt is crystallized from sea water, which is known to be a physical change.
下等金刚石结晶很差的金刚石，用于工业切割和研磨 Poorly crystallized diamonds used for industrial cutting and abrasion.
如果你将少许海水放到瓷盘中蒸发，冷却后就会有普通食盐的结晶附着在盘的四周。 If you evaporate a little sea water on a porcelain dish; on cooling, crystals of common salt will deposit on the sides of the dish.