Reference data for RCS scales, radio-frequency bands, engagement geometries, and representative threat systems are summarised in Annex a.
参考资料来源于rcs减缩、无线电波段、接触几何和典型威胁系统见附录a。
With the drastic frequency competition of communication, the usual communications with fixed frequency suffer from a serious threat.
随着通信领域的频率竞争愈演愈烈，惯用的定频通信受到了严重威胁。
In recent years, our country in a dangerous way to drive motor vehicle traffic accident frequency, it gives people's life and health and safety threat caused greatly.
近年来，我国以危险方法驾驶机动车辆而导致的交通事故频发，这给人们的生命、健康安全造成了极大地威胁。
In recent years, our country in a dangerous way to drive motor vehicle traffic accident frequency, it gives people's life and health and safety threat caused greatly.
近年来，我国以危险方法驾驶机动车辆而导致的交通事故频发，这给人们的生命、健康安全造成了极大地威胁。
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