短语词组短语traction n winch 牵引绞车electrical traction system winch 电动绞车Promise for traction winch rope 无极绳连续牵引绞车winch traction 绳索牵引;绞盘牵引winch traction plow 绞盘绳索牵引犁winch traction cultivator 绞盘绳索牵引中耕机 返回 traction winch