luffing

n.

俯仰运动，上下摆动，起重机臂的转动；

v.

转舵( luff的现在分词 )；

Crane-Luffing Cylinder Bearing with a Spherical Calotte
Dynamic responses of hydraulic crane during luffing motion
Level luffing control system for crawler cranes
The palatal canine and the adjacent lateral incisor: a study of a west of Scotland population
An Assessment of Computer-assisted Learning in Orthodontics
Lip and cheek pressure exerted upon teeth in three adult groups with different occlusions.
An ex vivo investigation into the release of fluoride from fluoride-containing orthodontic bonding composites.
The Influence of Fluoride-releasing Bonding Composites in the Development of Artificial White Spot Lesions. An Ex Vivo Study
Does the specialist nurse enhance or deskill the general nurse?
The lower lip and the maxillary central incisor