This paper introduces improved design of signal warning device on active naval vessels.

本文介绍了现役舰船信号报警装置的改进设计。

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The design and realization of chip type aircraft-borne sound-warning device are introduced.

介绍了基于微控制器的芯片式机载语音告警器的设计和实现。

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The system composition, line warning device, main warning device and inner data communication protocol were introduced.

介绍了系统的组成、列告警器、总造警仪设计和内部数据通信具体约定。

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Ratings are often stale and fail to function as an early warning device.

FORBES: Sovereign Credit Ratings: Relics Of A Bygone Era

In the process of crashing through the U.S. portal-monitoring facility, the Soviets reportedly damaged a barrier and warning device.

CENTERFORSECURITYPOLICY: Center For Security Policy

In the video, the major appears to be upbraiding the soldier for not using a laser warning device to signal the approaching truck.

NPR: Insider Attack Kills 2 US Troops, 2 Afghans