ray of refraction

Therefore the applications of the ray-parameter method to thin layers and the refraction method to hard layers need to be considered in an acoustic velocity measurement system composed of a sound source and a towed hydrophone streamer.

为此，有必要在一个由声源和拖曳水听器阵组成的声速测量系统中设置接射线参数法和折射法测量海底地层声速的处理功能。

And the thickness of ultra-thin layer was derived from small angle x-ray diffraction using the Bragg's equation witha refraction correction.

讨论了利用多层膜的小角x射线衍射谱理论分析，导出了单层膜厚度和多层膜周期厚度的测量方法。

Diffraction-enhanced X-ray imaging could extract accurately the refraction angles of the sample, which is very important to increase the image contrast of low Z samples.

射线衍射增强成像技术可以精确得到样品内部结构的折射角信息，对提高轻元素物质的成像衬度有着重要的意义。

A new method of mini-refraction ray tracing is given based on a model of homogeneous medium tilted interface, by which formation velocity, its thickness and its apparent dip ( along the spread direction of mini refraction) could be calculated.

给出了一种基于均匀介质倾斜界面模型的小折射射线追踪新方法，可以计算地层层速度、厚度及地层视倾角（沿小折射排列方向）；