The parameters calculation method of groove for hot rolled ribbed bars, such as the gap of end of cross rib, the teeth number of change gear, etc.是什么意思_The parameters calculation method of groove for hot rolled ribbed bars, such as the gap of end of cross rib, the teeth number of change gear, etc.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句