例句與造句

1. Some exponential sums over primes in an arithmetic progression
   算術(shù)級(jí)數(shù)中的一個(gè)指數(shù)和估計(jì)
2. By making use of two kinds of exponential sums and cohen ' s sieve , we better the lower bound concerning the number of primitive elements and also prove the existence of primitive polynomials with a1 , a2 prescribed when n = 5 , 6 . in the remaining of the paper we study primitive elements in the form of a + a - 1 over finite fields . a counting formula is given as a result , as well as all the finite fields that do not have such elements
   本文對n = 5 ， 6兩種情形，利用有限域上的兩類特征和估計(jì)及cohen篩法[ 5 ] [ 7 ] ，改進(jìn)了[ 10 ] [ 11 ]中關(guān)于方程組本原元解個(gè)數(shù)的下界，并得到在特征為奇的有限域上存在可預(yù)先指定前兩項(xiàng)系數(shù)的n次本原多項(xiàng)式。
3. It's difficult to find exponential sum in a sentence. 用exponential sum造句挺難的