短語詞組短語drag conveyor chain 刮板輸送機(jī)鏈drag conveyor chain tension 刮板輸送機(jī)鏈張緊度drag -chain arresting gear 鏈?zhǔn)綌r阻裝置drag conveyor chain assembly 刮板輸送機(jī)鏈縂成cable drag -chain 電纜拉拖鏈drag raddle chain 鏈板式輸送器transporting speed of drag -chain conveyer 輸送懸鏈速率 返回 drag chain