Warning: file_put_contents(): Only 0 of 7364 bytes written, possibly out of free disk space in /home/www/wwwroot/ndsq.cn/index.php on line 55 constricting nozzle例句_constricting nozzle英汉例句_constricting nozzle双解例句_开心英文字典_柠咚词
Substituting double electrode for normal tungsten and substituting spherical constricting nozzle for normal cone one are the key to design the torch. 用球面压缩喷嘴取代常规的锥形压缩喷嘴,这些是设计反极性弱等离子弧粉末堆焊枪的关键所在。