外国一级AⅤ在线观看_久久精品視频久久人人_日本人又色又爽视频看看_久久久久久免费A

This machine is mainly used to detect the rotation strength of the grinding wheel, and is equipped with a liquid crystal digital tachometer to display the instantaneous speed.

When the operator presses the button, the host can operate according to the preset speed control curve, and automatically complete the functions of acceleration, delay, speed reduction, stop, etc., and has a safety lock protection function.