紧急报警系统测试的日期与小行星从地球和月亮之间穿过之间有什么关系么？

Is there any relationship between the date of the EAS test and the passage of an asteroid passing between the Earth and Moon?

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为各使用火灾报警系统的单位测试火灾探测器报警功能及安装施工工程单位安装验收过程中必备之工具。

For the use of fire alarm system, fire detector alarm unit testing and installation of construction engineering units during the installation and acceptance of the tools is necessary.

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测试表明，主动扫描技术具有很高检测率和较低的误报警率。

The experiment results show that the new technique has a high detect-rate and a low false-negative.

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