ray axis

Based on the three-dimensional ray tracing and aberration calculations, the off-axis mirror line focus system used in SERC Rutherford Appleton Laboratory is analyzed.

基于三维光线追迹的象差计算，对卢瑟福实验室用离轴球面反射线聚焦系统作了分析。

By analysing the anatomy of upper cervical segment, the atlas-axis relation in plain X-ray film in 3-1 cases revealed that the joint displacement is one of the important causes for vertebral artery type or sympathetic type cervical spondylopathy.

通过对上颈段解剖的观察，寰枢关节X线平片的分析，对34例病人的治疗，我们认为：寰枢关节错缝是引起椎动脉型或交感型颈椎病的重要原因之一；

And if the axis of rotation doesn't coincide with the line through the two hot spots, if the neutron star rotates, you're going to see x-ray pulsations.

不合这两点之间的线，相一致，如果中子星旋转，你会看到x射线脉动，当热点在这里。

This event presents the strongest evidence to date for the detection of a gamma-ray burst off-axis, which means the cone emission from the explosion is not pointed directly at Earth.

此次观测为伽马射线暴轴偏移提供了有史以来最强有力的证据，也就是说伽马射线暴产生的锥状发射不是直接对准地球的。