Drawwork system can adopt teo types: drum hoist and double drum hoist.The main drum hoist adopts integral Ribas rope slot.是什么意思_Drawwork system can adopt teo types: drum hoist and double drum hoist.The main drum hoist adopts integral Ribas rope slot.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句