The increase of the cavityvolume makes partial materials realize the air impact, the unbroken parts of which enter into the grinding zone and become fine powder after many times of impact.
容积腔增大，使部分物料实现了空中打击，其未破碎部分经过多次打击后进入研磨区形成细粉。
2
Work by a pair of cavity mesh with each other in motor driver of rotor, next at high speed, and between the volume is constantly changing, so as to constantly pressure increase pressure condensed.
They are the cavity radiometer and the water flow power meter for laser power measurement, the cone calorimeter and the volume-absorbing calorimeter for laser energy measurement.