Warning: file_put_contents(/www/wwwroot/ppbbu/73904.com/cache/54c1109a8f721c24527eec142ead4349.txt): failed to open stream: No space left on device in /www/wwwroot/ppbbu/73904.com/index.php on line 55 pigtail connection例句_pigtail connection英汉例句_pigtail connection双解例句_骑士汉英词典
When using bulk supply of NF3, such as a Y cylinder or a tube trailer, the pigtail-to-valve connection should also be ventilated. 当需要大量供应NF3时，如Y钢瓶或管道拖车，还应该对猪尾管到阀门接头通风。