derrick crane meaning in English

吊臂起重机
吊杆起货机
吊杆式起货设备
动臂起重机
起重桅
全转式起重机
人字起重机；“三星架”
塔式起重机
桅杆起重机
桅杆式起重机
桅式转臂起重机
旋臂起重机
转臂起重机

Specification for power - driven derrick cranes
动力驱动悬臂式起重机规范
Travelling derrick crane
移动式转臂起重机
Furthermore , the plane dynamic graphic simulation and force analysis for lifting work course have been mainly probed in this paper . after this , it is available to select or design hoisting tools according to a special database of derrick crane and steel rope
论文主要是对吊装作业过程中平面动态图形模拟和受力情况分析，引入桅杆参数和钢丝绳参数数据库进行吊装机具的选择和设计。
The research work in this paper involves the simplifying of mechanics model , force calculation & analysis , strength of equipment , structural stability of derrick , breakage calculation of steel rope and a special computer database of derrick crane and steel rope
本论文主要介绍推举法的力学模型，涉及力的计算、设备强度验算、桅杆稳定性验算、钢丝绳破坏验算，此外还添加了供桅杆设计和钢丝绳选用的数据库。