Warning: file_put_contents(): Only 0 of 4913 bytes written, possibly out of free disk space in /www/wwwroot/ppbbu/cp667.com/index.php on line 55 steam valve bonnet例句_steam valve bonnet英汉例句_steam valve bonnet双解例句_淳朴汉英词典
Valve body and bonnet are separated by diaphragms in order to prevent valve parts, such as bonnets and steam from corrasion; 阀体与盖被中间隔膜隔开，使得隔膜上方的阀盖，阀杆等零件不受介质侵蚀；