Warning: file_put_contents(/www/wwwroot/ppbbbu/5356789.com/cache/761973484e80c5a9c820ad798ac11ff1.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbbu/5356789.com/index.php on line 55 ChDI例句_ChDI英汉例句_ChDI双解例句_零六五六深蓝词典
The properties and synthetic methods of CHDI and the synthesis and performances of CHDI based polyurethane elastomers have been discussed. 笔者论述了CHDI的性质和制备方法,讨论了CHDI型聚氨酯弹性体的合成工艺和性能。