延迟时间影响其干密度。
环境污染均促进这两个树种根系的生长，而抑制其干材的生长。
Environmental pollution accelerated root growth of these two trees, but inhibited stem growth.
研究了不同硬段结构和硬段含量和扩链剂对其干膜物理机械性能和吸水率的影响。
The effects of hard segment structure, hard segment content and chain extender with different structure on physical mechanical properties of dry films and water absorption were studied.
应用推荐