三半 meaning in English

minaka

3 . the solution for the distribution of potential internal the dielectric ellipsoid has been obtained by means of ellipsoidal coordinates , and has obtainted the expression of the polarization field strength in the dielectric ellipsoid , calculated the included angle value of polarization vector and the external field vector , making programe to compute to get the relation shetch between the included angle value of polarization vector and the external field vector and we have discussed the result and hold that the direction of polarization field strength with that of the external field don ’ t always strict antiparallel
二、讨论了带电粒子在均匀电磁场中的相对论运动规律。三、讨论了在均匀电场中电介质椭球体的极化规律。证明了电介质椭球内的极化场强方向与外电场方向并非严格相反,只有当外电场与电介质椭球的某一主轴平行或者当椭球体三半轴的大小都相等时,极化场强方向与外电场方向才严格相反。