Workers often jack up a car to change a tyre.
工人经常用起重机架起汽车换轮胎。
Shipbuilding-jib cranes
GB/T12932-1991船用臂架起重机
crane ,overhead traveling, not on fixed support
高架起重机,无固定支座
non-self-erecting tower crane
非自行架设塔式起重机
mobile crane with lattice jib
桁架臂流动式起重机
double-beam bridge type grab crane
双架桥式抓斗起重机
stiffleg derrick
固定支架桅杆式起重机
single girder truss gantry crane
桁架式单梁龙门起重机
triangular truss gantry crane
三角形桁架龙门起重机
double girder truss gantry crane
双桁架梁龙门起重机
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）
crane ,derrick (excl. floating cranes, crane lorries and railway rolling-stock), self-propelled
自动桅杆起重机（浮式起重机、起重运货汽车及铁路流动托架除外）
crane ,derrick (excl. floating cranes, crane lorries and railway rolling-stock), not self-propelled
非自动桅杆起重机（浮式起重机、起重运货汽车及铁路滚动托架除外）
gantry crane with jib crane
带臂架小车的门式起重机
crane ,overhead traveling, on fixed support
固定支座移动式高架起重机
Erection of the pylon required a crane of 1000 ton capacity.
塔架安装需用起重量达1000吨的吊机。
Design of Full Hydraulic Girder Erection Crane for Wuhu Changjiang River Bridge
芜湖长江大桥全液压架梁起重机设计
Technical features of luffing cable crane
摆塔式缆索式起重机塔架的技术特性