focal spot

基本解释

The article discusses how to design X-ray focusing system to obtain eligible focal spot size by a series of experiments.
本文通过一系列的实验，重点讨论如何设计X射线管的聚集系统来实现用户需要的焦点尺寸。
But the size perpendicular to polarization direction of focal spot with linear polarized beam is always smaller than that of radially polarized beam.
而线偏振光聚焦光斑垂直于偏振方向的直径始终小于径向偏振光聚焦光斑直径。
The Modulation Transfer Function(MTF) of X-ray tube focal sPOt and its size are the main parameters, which can be used to describe the photo function of X-ray tube focal spots.
线管焦点的调制传递函数（MTF）和焦点尺寸是描述X线管焦点成像性能的主要参数。