symmetrical distribution

基本解释

PET scan was compared with MRI. Results In healthy subjects PET scan showed clear and symmetrical distribution of radioactivity in the cerebral lobes.
结果正常人脑PET显像可见大脑各叶、基底节、丘脑、中脑及小脑放射性分布均匀对称。
In a symmetrical distribution, values are equally likely to fall above the mean as below it, and the most likely value, the mode, is equal to the mean.
从对称分布来看，分布在中间值上面的与下面的差不多是相等的，最可能的值，即mode，是与中间值相等的。
In electric discharge milling machining (EDMM) process, the rotation of the tool electrode makes tool wear be axial symmetrical distribution, so it is possible to be compensated.
在电火花铣削加工中，由于工具电极作旋转运动，其损耗呈轴对称分布，使工具电极的补偿成为可能。