This paper regards narrow fan-beam scan mode as multi-detector parallel beam scan mode.
本论文将窄角扇束扫描看成是多探头的平行束扫描。
The straight-edge diffraction of this parallel beam superposing on the light spot constitutes the so-called M-line.
这束平行光的直边衍射花纹与光斑本底叠加的结果在观察屏上形成为通常所称的M线。
Monolithic capillary X-ray lens can collect divergent white X-ray beam emitted from a point X-ray source into a quasi parallel beam.
整体平行束X光透镜能把点X光源发出的发散X光束聚焦后转变成准平行X光束。
Compared with the real edge generated when parallel beam illuminates an object, the virtual edge between bright and dark areas in the phenomenon of total reflection is more complex.
和平行光照射遮光物体产生的实边缘相比，全反射现象中半明半暗视场的分界线处的虚边缘情况更为复杂。
On this foundation, it simulates the projections for double Gauss distribution function and reconstructs the simulating temperature field by the convolution method for parallel beam.
依此原理，模拟了双高斯分布函数的投影，并由平行束卷积法重建出模拟的温度场。
According to comparison between the Gaussian beam and ideal parallel beam, some conclusions are given which ensure the measuring fineness when we make some measurements with the beam diffraction.
根据高斯光束与理想平行光束的对比，给出了若干结论，从而保证了在利用光束衍射进行某些测量工作时的测量精度。
Single-point, Parallel beam, Aluminium load cell;
单点平行梁结构，铝制传感器；
But the parallel-beam can not be realized directly in engineering.
平行束投影在工程上是不能直接实现的。
But the parallel-beam can not be realized directly in engineering.
平行束投影在工程上是不能直接实现的。
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