The results show that Cr-B layer has higher wear resistance,corro- sion resistance(except H_2SO_4),rub reduction and lower brittleness than B layer.是什么意思_The results show that Cr-B layer has higher wear resistance,corro- sion resistance(except H_2SO_4),rub reduction and lower brittleness than B layer.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句