pulley block
短语词组
- pulley y block 滑輪組
- electric pulley -block 電動葫蘆;電動滑車組
- pulley -block luffing gear 陞降支臂用滑輪組
- tension pulley block 張緊滑車;張緊滑輪
- double iron pulley block 雙輪鉄滑車
- twin pulley block 雙滑輪組
- and wormwheel pulley block 蝸杆蝸輪滑車組
- Pulley Block Hook 滑輪群拉鉤 返回 pulley block