• The key remaining step is a comprehensive test of the entire system at sea, which is much more difficult than test flights over land.

    剩下关键步骤一项整个系统海面上综合测试难度远远大于陆地上飞行测试。

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  • Modern communication system is a land-sea-space three-dimensional communication network whose realization is mainly restrained by underwater communication.

    现代通信系统-海-空三通信网,三维通信网的组成主要制约于水下通信。

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  • Shanghai has fostered a comprehensive transportation network that incorporates land, sea, and air travel, as well as a convenient urban transportation system.

    上海树立了综合交通运输网络包含交通以及一个方便城市交通系统

    youdao

  • Shanghai has fostered a comprehensive transportation network that incorporates land, sea, and air travel, as well as a convenient urban transportation system.

    上海树立了综合交通运输网络包含交通以及一个方便城市交通系统

    youdao

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