Test method for density and relative density specific gravity of viscous materials by lipkin bicapillary pycnometer 用利普金双毛细管比重计测量粘性材料的密度和相对密度
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Standard test method for density and relative density specific gravity of viscous materials by lipkin bicapillary pycnometer 用利普金双毛细管比重计测定粘性材料密度和相对密度
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Method for inspection of pona of naphtha for exportmethod for test of density and specific gracityof liquids with lipkin bicapillary pycnometer 出口石脑油pona值检验方法利普金双毛细管比重瓶法测定液体的密度和比重