Plasma arc thermal spray welding is a kind of surface harden engineering by taking plasma arc as themal resource and certain alloy power as additive.是什么意思_Plasma arc thermal spray welding is a kind of surface harden engineering by taking plasma arc as themal resource and certain alloy power as additive.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句