| 1. | The ray paths are circles .
射线路径呈圆弧状。 |
| 2. | Any outgoing ray path must be coincident with that of the returning ray .
任何出发的射线与返回的射线路径完全相同。 |
| 3. | The anisotropy associated with the earth's rotation results in a slight deflexion of the ray paths .
与地转有关的不均匀性会导致波向线产生轻微的偏转。 |
| 4. | Ray path transmission loss
射手系统射线路径传输损耗 |
| 5. | Shorter barlows , or ones with too much magnification , only exacerbate the problem because the ray path entering the eyepiece is steeper
短barlows ，或那些太多的放大，不仅会加剧问题，因为射线路径进入目镜是陡峭。 |
| 6. | Vignetting can occur due to the altered ray path , when the eyepiece ' s lenses are not large enough in diameter to allow all the rays to make it through
装饰图案可以发生是由于蚀变射线路径，当目镜的镜头是不是足够大的直径，让所有的光线，使之通过。 |
| 7. | The two point ray tracing is based on the snell theory and the fermat " minimum travel time principle " , which advantages is that it can calculate the accurate ray path from the source to the receiver
两点射线追踪主要是通过snell定理和费马最小时间原理确定激发点和接收点之间精确的射线路径。其优点是能够精确得出反射点的位置。 |
| 8. | Numerical simulations were done to show the distortion of the wavefront and the interference pattern under several kinds of typical plasma density distributions . the ray path in plasma was calculated by the numerical solution of the vector equation of light ray , when the plasma density was closing to the critical electron density of the laser frequency . through the simulations , the factors that influence the measurement were found out under different density distributions and shapes of plasma
在此基础上，采用数值模拟的方法，计算了在几种典型的等离子体密度分布下，激光波面的变化和产生的干涉图样；并用光线矢量微分方程的数值解法计算了当等离子体密度接近光频临界电子密度时，光线在等离子体中的传播路径，从中掌握了在不同的等离子体密度和形状下，进行干涉测量所应估计到的因素。 |
| 9. | The gauss - ray tracing have the dynamic and geometric character . it can compose the record by calculating the high frequency wave in transverse anisotropic medium , avoiding getting the accurate ray path . it is a very steady and effective method with little calculation time and a good precision
高斯射线束正演包括地震波运动学特征和动力学特征，能有效的计算横向上不均匀介质中高频体波的合成纪录，避开了精确求取两点射线路径，大大减少了计算的时间，同时又具有较高的精度，是一个很稳健有效的方法。 |
