查询词典 essential

It's essential to communicate with your partner.

这是必不可少的沟通与您的合作伙伴。

In order to cultivate students' communicative competence,the appropriate classroom activity is essential.

为了培养学生的交际能力，组织适当的课堂活动是十分必要的。

As an essential part of communicative competence, communication strategies play an important role in foreign language acquisition.

语言教学的最终目的是使学习者具有较高的使用目标语言交际的能力，特别是直接交际的能力。

Now the communicative competence of English is essential for English learners.

现在英语直言能力为英国学习者是根本的。

In chapter 2, a new concept- property T〓 is introduced, it is proved that nest subalgebras of von Neumann algebras, finite width CSL and atomic CSL subalgebras of von Neumann algebras have property T〓. Some tensor product formulae of nest subalgebras and CSL subalgebras in von Neumann algebras are obtained. Tensor products of W〓-dynamical systems are studied. Finally, the essential commutant of tensor product of operator algebras is discussed.

第二章我们引入了性质T〓这一新概念，并证明了任一vonNeumann中的任何套子代数，有限宽度的可交换格子代数和原子可交换格子代数都具有性质T〓；得到了von Neumann代数中套子代数和可交换格子代数的张量积公式；研究了W*-动力系统的张量积问题；最后讨论了张量积代数的本性换位。

Besides, through the study of essentially bounded functions on the unit circle, we get the necessary and sufficient conditions for the essential commutativity of k~-order slant Toeplitz operators with special symbols.

在此基础上，通过对单位圆周T上本性有界函数性质的研究，给出了以特殊函数为符号的两个k阶斜Toeplitz算子本性可交换的充要条件。

We obtain the necessary and sufficient conditions for the commutativity of k~-order slant Toeplitz operators and the compactness of products of such operators, in particular, the commutativity and the essential commutativity of such operators are in accord.

第二章研究了L~2上的k阶斜Toeplitz算子的性质、得到了两个k阶斜Toeplitz算子可交换的充要条件及其乘积和换位子是紧算子的充要条件，特别地，给出了两个k阶斜Toeplitz算子的交换性与本性交换性是一致的。

In short, book is an essential companion in our life.

总之，书是我们生活中不可或缺的伴侣。

The determination of the trademarkinfringement in the comparative advertising is the fundamental issue, because it is anessential link in the judicial practice and plays a key role in the penalty of the entirecase. So it is essential to research and discuss the problem specially and deeply.

而比较广告中商标侵权的认定则是其中最基本的问题，也是司法实务中必不可少的环节，这一认定对整个案件的判罚都起着关键性的作用，因此有必要对这个方面进行专门的、深入的研究和探讨。

It is essential to select computer tools for verification of the control algorithm and appraisal comparison of the systematic function index.

控制系统控制算法的验证和系统性能指标的评价及比较等都要求先选择有效的计算机工具来进行仿真。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。