A real or virtual photon may spontaneously annihilate.
一个实的或虚的光子可以自发地湮没。
In NRWA, the main factor which will deslroy the non classical effects is the virtual photon term.
不作旋转波近似， 破缺可积性的因素，主要来自虚光场项。
By Compton scattering of virtual photon with relativistic electron, the virtual photon can be transformed into real photon to radiate out.
当虚光子与作沟道运动的电子发生康普顿散射时，虚光子就会转化为实光子辐射出去。
Considering recoil of electron, a new theory to explain axial channelling radiation is presented based on Compton scattering of virtual photon with relativistic electron.
考虑电子的反冲的影响，利用虚光子与相对论电子的康普顿散射理论对轴沟道辐射进行了研究。
The proposed photon virtual source model is suitable for accurately simulating arbitrary shape and intensity distributions of external beam.
本文提出的光子虚拟源模型能够较为精确地模拟计算任意形状和强度的外照射放射治疗射束分布。
A photon virtual source model was developed for simulating arbitrary shape and intensity distributions of external beam using Monte Carlo method.
本文应用蒙特卡罗算法建立了一个光子虚拟源模型，用于模拟计算任意形状和强度的外照射放射治疗的射束分布。
A photon virtual source model was developed for simulating arbitrary shape and intensity distributions of external beam using Monte Carlo method.
本文应用蒙特卡罗算法建立了一个光子虚拟源模型，用于模拟计算任意形状和强度的外照射放射治疗的射束分布。
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