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.
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