有多少不等价的十位数?How many nonequivalent 10 - digit numbers are there?也就是说, 评级员的相对严格或宽松,对某一特定案例是不等价的.That is, the relative stringency, or leniency, of raters for a particular case is not equivalent....

“不等价”的英语可以翻译为：[计] inequivalence，unequivalence ...