disk saw

As compared with the practically-measured results, the analysis and the calculation theory established in this paper about cutting noise of the small-sized disk saw machine is correct.

Based on analogous Theory, the large sized disk saw machine model is manufactured. The sound and vibration properties of model saw blades are studied systematically and deeply via experiments.

When the planet Mars was first observed through a telescope, people saw that the round disk of the planet was criss-crossed on earth that are viewed from an airplane.