The lateralspreading of the sonic boom depends only upon altitude, speed and the atmosphere -- and is independent of the vehicle's shape, size, and weight.
音爆的横向伸展取决于高度、速度和大气,而跟飞行器的形状、大小和重量无关。
3
The technique of free hand insertion with the lateral mass screw of atlas and vertebra dentata pedicle screw is simple, fixation is reliability and is well worth to spreading.