求翻译：性质：白色六角晶系结晶或粉末，密度1975，是一种两性氧化物，不溶于水或乙醇，溶于酸碱溶液，高温时，呈黄色，冷却后，恢复白色。是什么意思？

Nature: white hexagonal crystal or powder, density 1975, is an amphoteric oxide, insoluble in water or ethanol, soluble in acid and alkaline solutions, high temperature, yellow, after cooling, the recovery of white.

Character: white 6 point crystal serial or powder, density, 1975 is a two-oxide, insoluble in water or ethanol, soluble in acid, alkali hydroxides, when the temperature is yellow, cooling after restoration, white.

Nature: The white hexagonal system crystallizes or the powder, the density 1975, is one kind of intermediate oxide, does not dissolve in the water or the ethyl alcohol, when dissolves in the acid and alkali solution, the high temperature, assumes the yellow, after cooling, restores the white.

Properties: white hexagonal crystals or powder, density of 1975, is an amphoteric oxide, not soluble in water or alcohol, soluble in acid and alkaline solutions, high temperatures, yellow, after cooling, restored white.

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