evaluation of the reference density of polyethylene in form of a pipes 管状聚乙烯基准密度的评价
evaluation of the reference density of polyethylene in form of granulates 粒状聚乙烯基准密度的评价
bituminous mixtures-test methods for hot mix asphalt-determination of the reference density 沥青混合料.热混沥青的试验方法.参考密度的测定
bituminous mixtures-test methods for hot mix asphalt-part 9 : determination of the reference density 沥青混合料.热拌沥青的试验方法.第9部分:参考密度的测定
determination of density of thermoplastic pipes and fittings-part : determination of reference density of polyethylene pipes and fittings 聚乙烯管材及管件基准密度的测定