The thinking of study is to develop the new-type spring steel to replace 50CWA on the basis of traditional 60Si2MnA to apply to manufacturing thick leaf-springs of cross-section( 15 mm).是什么意思_The thinking of study is to develop the new-type spring steel to replace 50CWA on the basis of traditional 60Si2MnA to apply to manufacturing thick leaf-springs of cross-section( 15 mm).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句