The system - designated the OE-538 - provides high performance, erectable mast-mounted communication and navigation capabilities.
所指定的OE-538系统能够提供高性能、直立桅杆式通信和导航能力。
In this country, the erectable rectangular segment has not been adopted, with its relevant theory of design or calculation falling short of soundness.
矩形拼装式管片在我国还没有采用，相关设计计算理论也不完善。
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