A composite coating was prepared by oxygen and acetylene thermal spray welding using the powders composed of Ni-based powder and nano-Al 2O 3,sub-micron-Al 2O 3,micron-Al 2O 3.The effects of the load and time on abrasive resistance were studiesd.是什么意思_A composite coating was prepared by oxygen and acetylene thermal spray welding using the powders composed of Ni-based powder and nano-Al 2O 3,sub-micron-Al 2O 3,micron-Al 2O 3.The effects of the load and time on abrasive resistance were studiesd.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句