在井下，局部通风机一接进电网便无控制地长期恒速运转，“一风吹”现象非常严重。

In the mine well, the local fan works in the long-term constant speed as soon as it meets the electrical network, the phenomenon of invariable speed is extremely serious.

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实验结果表明，该电路在井下高温高压恶劣环境中能够稳定可靠地长时间工作，完全满足工业生产作业的需要。

The results of experiments show that the circuit can operate stably and reliably in high temperature and high pressure environment, and can satisfy the need of industrial production.

youdao

实验结果表明，该电路在井下高温高压恶劣环境中能够稳定可靠地长时间工作，完全满足工业生产作业的需要。

The results of experiments show that the circuit can operate stably and reliably in high temperature and high pressure environment, and can satisfy the need of industrial production.

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