Warning: file_put_contents(): Only 0 of 6359 bytes written, possibly out of free disk space in /home/www/wwwroot/zidian/totle.com.cn/index.php on line 55 preflow是什么意思，preflow的翻译，preflow音标、读音、用法和例句_乐豆毛深蓝词典
The power source has such performances as lift starting, DC arc welding, pulse welding, gas preflow, gas postflow, etc. 該電源具有提陞引弧 、直流銲、脈沖銲、提前送氣和延時斷氣等功能。