luffing winch 变幅绞车 ; 俯仰式起重机
luffing crane 俯仰式起重机 ; 旋臂起重机 ; 水平起重机 ; 动臂起重机
luffing motor 吊杆俯仰电动机 ; 吊杆俯仰电念头 ; 吊杆仰俯电动机
level luffing crane 平行运送旋臂起重机 ; 平动起重机 ; 水平移动起重机 ; 平伸式起重机
luffing derrick 俯仰式吊杆 ; 俯仰式吊货杆
luffing gear 吊杆倾角调节器 ; 摆动装置
luffing cableway mast 倾斜式缆道桅杆
levelling luffing crane 平动旋臂式起重机
luffing grab 俯仰式抓扬机
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N the leading edge of a fore-and-aft sail 纵帆的前缘 [nautical]
N tackle consisting of a single and a double block for use with rope having a large diameter 升降机吊杆
V to head (a sailing vessel) into the wind so that her sails flap (帆船)迎风行驶 [nautical]
A boat cannot sail directly into the wind; attempting to do so is called luffing.
乘船航行不能直接进入风；试图这样做是所谓的变幅。
Lifting machine, luffing, Rotary and other organizations, all of the motor-driven.
该机的起升、变幅、回转、等机构，全部采用电机驱动。
Verb: Luffing refers to a shaking or movement of the leading edge of a sail when it is not in trim.
动词1：luffing指的是当帆不平整时，帆的前缘的摇动或移动。
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