For years, Allen and colleagues have been developing an earthquake early-warning system in California, placing instruments in many of the state's fault lines.

多年来，艾伦和她的同事们一直研发加州地震早期预测系统，该系统将一些仪器安放在本州易发地震的断裂带上。

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A device which is used to control load distribution of the multipoint drive is presented. It has some functions such as automatic check, control, fault warning etc.

介绍了一种用于多传动点，带同一负载时控制传动点电机负荷分配的装置。该装置在多传动点负荷分配上实现了自动检测、自动控制、故障警示等自动功能。

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Be the adoption of redundancy optimization, self-designed adjustable installation structure of loop coder, redundancy switching and fault warning functions of the loop coder were developed.

采用冗余优化，自行设计实施活套编码器可调式的安装结构，开发出活套编码器的冗余切换和故障报警功能。

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The pilots also received a warning that there was a fault in the battery system.

BBC: Top Japan airlines ground Boeing 787s after emergency

More to the point, it is possible that some of this power might be released before a fault moves catastrophically, and thus provide some warning of an earthquake.

ECONOMIST: Predicting earthquakes