• But delays and inefficiencies in air travel are due in large part to an outdated traffic-control system that still relies on slow, ground-based radar stations and repetitive voice communication.

    不过航空运输延迟低效的主要原因还是过时的空中交通管制——一套依靠地面控制反应迟缓雷达站不断重复语音通讯建立起来的体系。

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  • The control and actualize system of variable rate fertilization consist of DGPS, Field Computer, Hydraulic Motor, Ground Sensing Radar and fertilizer assembly.

    变量施肥控制实施系统包括差分gps系统田间计算机液压马达测速雷达排肥器总成

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  • This proves that the one-dimensional trajectory amendments mode of ground radar surveillance and progroud fire-control center control is entirely feasible and can achieve low-cost and miniaturization.

    由此可见,采用地面雷达导航、由地面火控中心发射指令一维弹道修正方式完全可行可以做到低成本小型化

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  • This proves that the one-dimensional trajectory amendments mode of ground radar surveillance and progroud fire-control center control is entirely feasible and can achieve low-cost and miniaturization.

    由此可见,采用地面雷达导航、由地面火控中心发射指令一维弹道修正方式完全可行可以做到低成本小型化

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