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。
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。
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