1.
The arm of carne slewed round.

起重机臂转了过来。
2.
concreting boom

浇注混凝土起重机臂
3.
jib adjusting gear

起重机悬臂升降机构
4.
crane ,jib (excl. portal and pedestal cranes), self-propelled

自动悬臂起重机(门式臂架起重机及支座式悬臂起重机除外)
5.
crane ,jib (excl. portal and pedestal cranes), not self-propelled

非自动悬臂起重机(门式臂起重机及支座式悬臂起重机除外)
6.
Shipbuilding-jib cranes

GB/T12932-1991船用臂架起重机
7.
crane with derricking jib

装有人字铁臂的起重机
8.
gantry crane with retractable boom

可伸缩悬臂门式起重机
9.
travelling portal jib crane

门式移动悬臂起重机
10.
mobile revolving boom crane

自行式伸臂回转起重机
11.
light mast crane

轻型桅杆式转臂起重机
12.
portable telescopic crane

轻便伸缩臂式起重机
13.
underhung slewing jib crane

悬挂式回转臂起重机
14.
level luffing crane

平行运送旋臂起重机
15.
mobile crane with articulated jib

铰接臂流动式起重机
16.
luffing jib tower crane

动臂变幅塔式起重机
17.
cantilever walking crane

壁装移动式悬臂起重机
18.
mobile crane with lattice jib

桁架臂流动式起重机