它们被称为“虚粒子”(virtual particle)，以便与实粒子(real particle)区分隔来，而实粒子则不会以这种体例受到制约，而且其存在可得以测定。
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它们被称为虚粒子，为了区别他们和实粒子/，（实粒子的）存活时间不会受到限制/以同样的方式/，并且（其存在）能够被测定。 髧。
They yare called virtual particles/ in order to distinguish them from real particles/, whose lifetimes are not constrained in the same way/, and which can be detected/.
微分散射截面的变化主要依赖于相对介电常数实部、虚部数值较大的一方，并且随粒子取向角的增大而增大。
The variation of DSCS depends on the larger part between real part and imaginary part of dielectric coefficient. The DSCS and azimuth angle are in proportional relation.
在本文中我们得到了极化和关联所贡献的单粒子位虚部的解析表达式，并通过色散关系计算了它们对单粒子位实部的贡献。
The imaginary parts of the polarization and correlation contributions are calculated analytically and the real parts of them are obtained by means of dispersion relation.
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