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。
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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