boomtrack-slewingmachine,bridgetrack-slewingmachine詞語:boomtrack-slewingmachine,bridgetrack-slewingmachine解釋:懸臂軌道轉換機,橋樑軌道轉換機詞典:專利專業英漢詞典boomtrack-slewingmachine,bridgetrack-slewi......