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 )...

It consists of feeder hopper, outlet hopper, discharge chute and luffing mechanism.由进料斗 、 出料斗 、 排料槽及变幅机构构成.It changes working radius usually by luffing jib.通常多采用俯仰臂架的方法来实现工作幅度的改变.A - type quayside container crane with ji...

luffing的音标：luffing的英式发音音标为：['lʌfɪŋ]luffing的美式发音音标为：['lʌfɪŋ]...