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 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

Vehicle inspector John Cripps, who later looked at the lorry from inside the cab, told the inquest he turned down its loud radio and could then hear the handbrake warning device.

BBC: Northampton