短語詞組短語sheave block [機]滑輪組wooden sheave block [建]木輪滑車sheave block component 滑車組部件sheave block bearing 滑車組軸承multiple sheave block 多輪滑車upper sheave block 上滑輪組three -sheave block 三輪滑車single sheave metal block 單輪金屬滑車multiple sheave pulley block 多坑轆轤 返回 block sheave