短语词组短语hot -melt t adhesive 热溶胶polyurethane hot -melt adhesive 聚氨酯热熔胶Copolyamide Hot -melt Adhesive 聚酰胺热熔胶Polyamide Hot -melt Adhesive 聚酰胺热熔胶 返回 hot-melt adhesive