appel

The year is Appel leap year if there are13 months in the year .

如果某一年有13个月，这一年就叫做闰年。

Shortly before he died , Appel 's father wrote him a letter while he was still at school .

在埃佩尔的父亲去世前不久，他写了封信给当时还在念书的埃佩尔。

In2002 I invited Appel to our Caribbean Camp as a guest instructor .

2002年我邀请阿佩尔去加勒比海的训练营做客席指导。

The idea of Appel 's hierarchical algorithm handling the many body problem is implemented in the direct boundary element method ( BEM ) for computation of 3 D VLSI parasitic capacitance .

文中将Appel处理多体问题的层次式算法思想实现于直接边界元法，用以计算VLSI三维互连寄生电容。

Elle a appel ce matin . Elle apportait le cassoulet .

她今早挂了个电话过来还带了豆焖肉

In 1976 , Haken and Appel gave the first proof , which later was improved by Robertson . First , they show every planar triangulation contains one of the configurations in their unavoidable set .

是一个可与费马猜想相媲美的难题，直到1976年才由哈肯和阿佩尔给出了第一个证明，随后Robertson等人对他们的方法进行了改进。

Though American mathematician Appel and Haben declared that they had proved Four color conjecture to be correct by using computers , which ran for 1200 hours , people still expect a simple theoretical proof instead of using computer .

1976年美国数学家Appel和Haken宣布：他们用电子计算机花了1200多小时证明了四色猜想是成立的。