In accordance with the testing items and technologic al data of conditioned weight of nylon 66 precusor,substantial raw data were col lected and some concerning researches were made.

 
  • 围绕尼龙66原丝纤度检验的项目和技术指标,我们收集了大量的原始数据,进行了有益的探索。
今日热词
目录 附录 查词历史