Warning: file_put_contents(): Only 0 of 7569 bytes written, possibly out of free disk space in /home/www/wwwroot/ndsq.cn/index.php on line 55 pigtail connection是什么意思，pigtail connection的翻译，pigtail connection音标、读音、用法和例句_开心英文字典_柠咚词
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。