During high power CO 2 laser beam welding,the plasma above the keyhole will influence the absorption ratio of the laser energy absorbed by the workpiece.是什么意思_During high power CO 2 laser beam welding,the plasma above the keyhole will influence the absorption ratio of the laser energy absorbed by the workpiece.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句