The vertical milling spindle is made of SCM4 with the sleeve plated with HCr.The worm gears and various copper parts are made of phosphor bronze with strictly accurate grinding.是什么意思_The vertical milling spindle is made of SCM4 with the sleeve plated with HCr.The worm gears and various copper parts are made of phosphor bronze with strictly accurate grinding.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句