craning boom meaning in Chinese

起重转臂

Walling under the rotation radius of crane boom is prohibited
吊臂旋转半径下，禁止人行走。
Crane boom hoist disengaging device
起重机吊杆构架提升的分离装置
With the proposed method , the optimal design of crane booms made of high strength alloy tubes used for drilling platform is carried out in order to obtain the lightest crane booms
对采用高强度钢管研制的某海洋钻井平台起重机臂架进行优化设计，获得了最轻自重起重机臂架的最佳设计方案。
Taking thickness of web members and main chords as design variables and the lightest weight of crane booms as objective junction , considering constraints of rigidity and stability etc . , this paper establishes the math model of optimal design
摘要选取起重机臂架的腹杆壁厚和各节臂架的主弦杆壁厚为设计变量，以最小重量为优化目标，考虑刚度和稳定性等约束条件，建立优化数学模型。