Study on the selecting method of steel cable in derrick crane;
桅杆式起重机缆风绳选用方法的探讨
new mechanical bumper jack
新式机力保险杆起重器
light mast crane
轻型桅杆式转臂起重机
stiffleg derrick
固定支架桅杆式起重机
The moment limiter for crane is one important overload protector, it is veryessential for crane to work safely.
起重机力矩限制器是一种重要的超载保护装置。
Study on No-connection Torque Protection Technology of the Large Tower Crane;
大型塔式起重机非接触式力矩保护技术研究
derrick ,ship's (excl. floating), not self-propelled
非自动船用桅杆起重机（浮式起重机除外）
pendulum grip gear
(起重机的)摆式安全器
Research and Development of Limiter for Flxed and Gyrate Crane;
固定回转式起重机力矩限制器的研究与开发
Principle and Application Analysis for Moment Limiter of Crawler Cranes
履带式起重机力矩限制器的原理及应用分析
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）
A usually portable device for raising heavy objects by means of force applied with a lever, screw, or hydraulic press.
千斤顶，起重机通过杠杆、螺丝钉或水的压力把重物提起的便携式装置
diesel-electric floating crane
内燃电力浮式起重机
power-driven lifting appliance
动力推动式起重机械
The Optimal Design of Lever Drive Gravity-type Strength Training Apparatus
杠杆传动重力式力量训练器械优化设计
Researching for Steel Structure Calculation System of Four-bar-type Gantry Crane
四连杆式门座起重机钢结构计算系统研究
Research on Insurance Model under the Mechanism of Catastrophe Risk Diversification
重大灾害风险分散机制下保险经营模式研究
wrecking crane
救险起重车[机], 救险吊车