TACHOMETER generator, a small electric generator for supplying current at a frequency proportional to the speed of rotation.

测速发电机，提供频率与转速成比例的电流的小发电机。

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By simultaneously sampling roll-bar speed and estimating tension by electric current-torque method the forward slip model for continuous shape rolling can be identified on-line.

在正常连轧生产条件下，同时在线采集轧辊与轧件速度并采用电流—力矩法估计机架问张力值，可以在线地识别前滑模型。

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Welding process factors consist of welding electric current, electric arc voltage, welding speed, etc.

焊接工艺因素包括焊接电流、电弧电压、焊接速度等。

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