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 test the rotation strength of grinding wheel and is equipped with LCD digital tachometer to display the instant speed.
When the operator presses the button, the host machine can run according to the preset speed control curve, and automatically complete the functions of acceleration, delay, deceleration, and stop, etc., with the function of safety lockout protection.