The rise of temperature of bore surface caused by the heat effect of propellant gas is the main reason of wear and erosion, however the direct reason of it is the scouring of propellant gas, the chemical effect, and the mechanical wear of band.是什么意思_The rise of temperature of bore surface caused by the heat effect of propellant gas is the main reason of wear and erosion, however the direct reason of it is the scouring of propellant gas, the chemical effect, and the mechanical wear of band.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句