Production principle, character and primary influence factors of Descartes ray are studied by experiments on the basis of theoretical analysis.
在理论分析的基础上,通过试验着重研究了纤维笛卡尔线的产生机理、特征和主要影响因素。
2
The presented results also include the relations between scattering factors with therapeutical fields and the distances of primary X-ray source and target plane.
比较的结果还包括均整块和初级准直器的散射与射野大小及离开X射线源距离之间的关系。
3
The intensity of the secondary radiations is weak compared with the intensity of the primary X-ray beam, and some of it, too, may not escape from the material.