必要条件

Moreover, frozen restraint between the slate and the underneath frozen soil is an important condition for frost heaving of the slate.

另外 ，渠道边坡衬砌层和其下冻土层之间冻结约束的存在与否是边坡衬砌层会不会受冻胀力的必要条件，若此约束存在，则可能受冻胀力，若此约束不存在，则其不可能受冻胀力。

Teacher education authority is the inherent attributes of teachers in education with the full authority of education and the necessary conditions.

教师权威是教育的内在属性，是教师在教育中具有教育权威性的充分必要条件。

Herein lies not only the fundamental solution to the problems in world economic development, but also an essential condition for development of a new economy in the new century.

这是解决目前世界经济发展中存在问题的根本出路，也是推动新经济进一步发展的必要条件。

Here in lies not only the fundamental solution to the problems in the world economic development, but also an essential condition for development of the New Economy in the new century.

这是解决目前世界经济发展中存在问题的根本出路，也是推动新经济进一步发展的必要条件。

Herein lies not only the fundamental solution to the problems in the world economic development, but also an essential condition for development of the New Economy in the new century.

这是解决目前世界经济发展中存在问题的根本出路，也是推动新经济进一步发展的必要条件。

Because the hardware and software may be implemented quickly if wechoose proper normal bases to represent finite fields. In this paper, we first introducesome basic definitions and facts on normal bases over finite fields, then extend theseresults to any Galois extension fields.

在这篇文章中，我们先介绍了有限域上的一些基本定义及关于正规基的相关结论，进而将域扩张到一般的伽罗瓦扩域中，得到了伽罗瓦扩域中正规基与其对偶基等价的充分必要条件，从而将有限域上正规基的等价条件推广到任意伽罗瓦扩域上。

By generalized {1} inverse matrix,we obtain the necessary and sufficient conditions and general integral for a type of matrix equation having solution over regular ring with an identity,and generalize and complement some existing results in the literature.

借助矩阵的广义{1}逆，在含幺正则环上给出一类矩阵方程相容的充分必要条件及其通解表达式，推广和改进了已知的一些结果。

In this paper, we consider the iterative methods for computing the generalized Bott-Duffin inverse.

该文我们考虑计算广义Bott-Duffin逆的迭代方法，研究了迭代公式收敛的充分必要条件。

Moreover, we still get an sufficient and necessary condition of uniform sequence of generalized fuzzy integrable functions.

此外，还得到了非负模糊可测函数列广义模糊一致可积的一个充分必要条件。

In the forth chapter, a necessary and sufficient condition of the approximation by the partial sum of the generalized Baskakov operators is discussed.

第四章给出广义Baskakov算子用其部分和来代替进行逼近的一个充分必要条件。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。