Warning: file_put_contents(/www/wwwroot/zidian/biehu.cn/cache/410ed5876a773b20a4fb83532dcc28cc.txt): failed to open stream: No space left on device in /www/wwwroot/zidian/biehu.cn/index.php on line 58 preflow是什么意思，preflow的翻译，preflow音标、读音、用法和例句_甲百汇小鸡词典
The power source has such performances as lift starting, DC arc welding, pulse welding, gas preflow, gas postflow, etc. 该电源具有提升引弧 、直流焊、脉冲焊、提前送气和延时断气等功能。