The relation formula for the largest radius of rounded root of bolt with the cutting depth at the root of the nut, and the pitch of the nut is given.是什么意思_The relation formula for the largest radius of rounded root of bolt with the cutting depth at the root of the nut, and the pitch of the nut is given.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句