viscosity improver是什么意思

用法例句

The coupling mechanism of silane coupler and its use as endcapper,adhesion promoter and dehydrating agent in polyurethane sealant are discussed.

论述了硅烷偶联剂的偶联机理及其作为封端剂、粘接促进剂和干燥剂在聚氨酯密封胶中的应用。