警报系统。入侵和滞留系统。第2 - 4部分：组合无源红外和微波探测器的要求。

Alarm systems - Intrusion and hold-up systems - Part 2-4: requirements for combined passive infrared and microwave detectors.

youdao

提出在现有条件下利用激光实现无源红外方位标的思路，并通过详细计算与分析，论述了无源红外方位标的可行性。

This paper points out how to found a passive drone of infrared under the present conditions and discusses the feasibility of the drone with careful calculation and analysis.

youdao

提出在现有条件下利用激光实现无源红外方位标的思路，并通过详细计算与分析，论述了无源红外方位标的可行性。

This paper points out how to found a passive drone of infrared under the present conditions and discusses the feasibility of the drone with careful calculation and analysis.

youdao