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水在0℃或低于O℃时凝结减的固体为冰,积冰为凌。冰凌可分为水成冰、沉积冰、冰川冰三大类。水成冰是由水直
Water at 0 ° C or below when the condensation of solid ice is ice, ice for the Ling. Ice can be divided into water ice, sedimentary ice, ice ice three categories. Ice into water is water straight