用比重计法测定稀释沥青比重api比重或密度的标准试验方法
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Check your specific gravity by putting the sanitized hydrometer right in the container.
在容器中通过投入消毒的液体比重计检查比重.
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Hydrometer : An instrument used for measuring the specific gravity of a liquid or solution.
比重计: 量度液体或溶液的比重的仪器.
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