计算结果符合结构设计规范的要求，可以为半硬式平流层飞艇的结构设计提供参考。
The simulation result comply with the specifications of structure design well, and a reference for semi-rigid structure of the stratospheric airship was provided.
结合实例阐述了利用抓斗船进行硬式扫床的设备结构，扫床方法及其优点。
The equipment, method and advantages of rigid bed-sweeping by grab dredger are presented combining an engineering case.
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