例句與造句

1. Furthermore , with the induction of precision order of a type - function u ( r ) , the necessary and sufficient conditions of the dirichlet series , which keep unaltered the order and the type , are obtained . such a result naturally has a bearing on " rearrangement problem " of power series and abel summable series
   此外，當?shù)依锟巳R級數(shù)引入精確級后，得到了有限級狄里克萊經(jīng)過重排后的精確級以及關于型函數(shù)u ( r )的型保持不變的充要條件。
2. It's difficult to find summable series in a sentence. 用summable series造句挺難的