绞辘绞辘的英文

• three fold purchase

• 绞:    twist
• 绞辘:    double luff; three fold tackle; two fold purchase; two fold tackle; whiand ru er; whiand runner; whip and runner; whipandru er
• 长绞辘:    long tackle
• 动绞辘:    moving tackle
• 绞辘中:    running block