Warning: file_put_contents(): Only 0 of 4833 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 Andard例句_Andard英汉例句_Andard双解例句_淳朴汉英词典
The meaning and features of coal indury safery, safety operation andard , marketing ructure andard and marketing effect andard are analyzed in this paper. 本文分析并得出我国煤炭产业整体运行不平稳、缺乏安全性,产业内竞争缺乏有效性、可持续性。