crown block
短語(yǔ)詞組
- bailer crown -block 撈砂天車(chē)
- sliding crown -block 可平移的天車(chē)
- crown n block 天車(chē)
- g crown -block 可平移的天車(chē)
- straight rotary crown -block 單層天車(chē)
- run into crown -block 碰天車(chē)
- bailer r crown -block 撈砂天車(chē)
- valve -against-overwinding crown-block protector 天車(chē)卷閘防碰安裝
- arch crown block 拱頂石 返回 crown block