Emphasis will be primarily on reactive, moisture curing polyurethanes that are applied as one-component liquids, hot melts and binders for wood compositionboard.
重点讨论单组分液体型、热熔型和木材复合板粘接用反应型、湿气固化聚氨酯胶粘剂。
2
Composition alone can't give you the answer to the question of why is the plywood superior to the solid pine board.
只用组成成分无法解答为什么胶合板要优于松木板这个问题。
3
So, composition alone can't give you the answer to the question why is the plywood superior to the solid pine board?