用过滤漏斗和过滤纸把硫酸铜、砂子和水的混合物过滤到另一个广口瓶里。
Use a filter funnel and paper to filter the mixture of copper sulphate, sand and water into a second jar.
称过重量后，采用过滤法，用过滤纸滤出水样中的全部固体颗粒。
That have weight, the use of filtration, filter water filter paper used in all kind of solid particles.
称过重量后，采用过滤法，用过滤纸滤出水样中的全部固体颗粒。
That have weight, the use of filtration, filter water filter paper used in all kind of solid particles.
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