短語(yǔ)詞組短語(yǔ)gear -box production line 變速箱柔性生産線main gear -box 主減機(jī)匣work gear -box 作業(yè)變速箱Automation Gear -box 自動(dòng)變速箱supplementary gear -box 副變速箱 返回 gear-box