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蜡通常是白色、无味的蜡状固体,在47°C-64°C熔化,密度约0.9g/cm3,溶于汽油、二硫化碳、二甲苯、苯、氯仿、四...
2023
牛奶比重一般是多少,牛奶比重计怎样测量使用?牛奶的密度范围牛奶的密度通常在 1.02 - 1.04 g/cm³ 之间,具体数...
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