The light jumps and flickers, making everything inside the cave seem as if it's flickering and shifting, giving an air of haunting otherworldliness to the cave.
Introducing a kind of dynamic capability study method which tested jumpiness of the sawblade made in Germany on the precision sizing saw machine, as well as vibration of principal rotation axle.
The method of two point probe focus is proposed to resolve the proble m of the jog of focus, and unitization processing is used to eliminate the chang e of laser power.