BS 2782-6 Methods 620A to 620D:1991
塑料測試方法 維度屬性 非泡沫塑料的密度和相對密度的測定 方法 620A 至 620D:非泡沫塑料的密度和相對密度的測定
Methods of testing plastics. Dimensional properties. Determination of density and relative density of non-cellular plastics. Methods 620A to 620D:Determination of density and relative density of non-cellular plastics