[机]?差动绞盘

... 差动交换齿轮 differential change gear 差动绞盘 differential windlass 差动链滑车 differential chain block ...

[机]?差动滑车

... hydraulic windlass 液压起锚机 differential windlass 差动滑车,差动卷扬机... hand windlass 手摇卷扬机 ...