采用有限元数值模拟方法，分别计算了这两种特大型起重桅杆在顶端钢丝绳斜拉条件下桅杆吊重的线弹性屈曲临界载荷。
The critical loads of linear elastic flexuosity were computed for 64,80 m hoist masts under the condition of inclined steel cable on the top using finite numerical simulation method.
在舰艏甲板上的大型起重机和通信天线桅杆移除被一座跟踪雷达代替。
The large crane and communication mast on the bow deck was removed and replaced by a tracking radar.
重点介绍WD120型桅杆式起重机的技术性能参数、构造特点及采用的多项先进技术。
The technical performance parameters, design features and multiple advance techniques adopted in model WD120 derrick crane are presented.
桅杆起重机工作时会受到多种因素的作用，其安全性受到广泛关注。
Mast crane is subject to the interference of diversified factors when it is running, and its security has attracted extensive attention.
桅杆起重机工作时会受到多种因素的作用，其安全性受到广泛关注。
Mast crane is subject to the interference of diversified factors when it is running, and its security has attracted extensive attention.
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