塑料 聚乙烯醇材料(PVAL) 第2部分:性能测定
Plastic-Poly(vinyl alcohol)(PVAL)materials Part 2:Determination of properties
Plastic-Poly(vinyl alcohol)(PVAL)materials Part 2:Determination of properties
Plastics-Polymethylene polyphenyl isocyanate-Part3 :Determination of viscosity
Plastic-Poly(vinyl alcohol)(PVAL)materialsnPart 3 :Specification
Plastics-Polyether polyols Part 7:Determination of viscosity
Plastics-Polyether polyolsnPart 5:Determination of acidity as acid number
Plastics-Polyether polyols-Part 6 :Determination of degree of unsaturation
Plastics-Aromatic isocyanates for use in the production of polyurethane Part 5:Determination of acidity
Plastics-Poly(vinyl alcohol)(PVAL)materials Part 1:Designation system and basis for specifications
Plastics-Polyether polyols Part 3 :Determination of hydroxyl number
Plastics-Polyamides-Part 1:Determination of viscosity number