The failure form of laser coating under repeated impact load were studied.The fail mechanism of surface pitting and surfacial spalling of the pieces under repeated impact load were studied.是什么意思_The failure form of laser coating under repeated impact load were studied.The fail mechanism of surface pitting and surfacial spalling of the pieces under repeated impact load were studied.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句