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Structures of Na~+-AD ion-complexes with 1 or 2 H2O molecules were obtained. It was found that H2O can bond with Na~+ in the structure of Na~+-AD to form Na-O van der Waals bond. H2O molecule can also bond with N or O atoms in AD moiety to form H-bonds as N-H…Ow or O…Hw-Ow. The former process takes place more easily. The most stable structures of Na~+-AD ion-complexes with 1 and 2 H2O molecules are W-C7AB and 2W-C7AB, respectively.αB conformer of Na~+-AD can not exist in the presence of 2 H2O molecules.

研究发现水分子可以结合在Na~+-AD络合离子中的Na~+附近形成Na-OW范德华键，也可以与Na~+-AD络合离子骨架结构中电负性较强的N或O原子结合形成N-H…OW或O…HW-OW氢键，相对而言，水分子更容易结合在Na~+-AD络合离子中的Na~+位置，Na~+-AD最稳定的带1个或2个水分子的结构分别为W-C7AB和2W-C7AB，Na~+-AD络合离子的αB构象在2分子水存在的情况下完全消失。

In general,given two vertices V and W in a graph,it is not always possible to find a path connecting them;such a path will exist only when the graph is 'in one piece'.

D8 |一般而言，给定图的两个顶点V和W并非总能找到连接它们的路；只有当图是"在一块中"时，这样的路才存在。

In general,given two vertices V and W in a graph,it is not always possible to find a path connecting them（see Fig.3-9）;such a path will exist only when the graph is"in one piece".

一般而言，给定图的两个顶点V和W并非总能找到连接它们的路（如图3-9所示）；只有图"在一块之中"时，这样的路才存在。

Atomic formulas and all compounds thence constructible- W.V.Quine; a natural conclusion follows thence;public interest and a policy deriving therefrom; Typhus fever results therefrom.

有原子方程式，然后由此合成了所有的化合物——w·v·奎尼；由此自然得出的结论；根据公众利益制定的政策；由此导致的伤寒热。

The controller makes the closed-loop systems internally stable and minimizes the H2 norm of the transfer matrix Tzw from w to z. Two Riccati formulae based on 8 operator is deduced. The H2 problems for continuous time systems, Z operator models and 8 operator models are investigated respectively.The guaranteed cost control problem of robust stabilization and robust performance for uncertain systems which is described by 8 operator is discussed in this paper.

采用Riccati方程处理方法讨论了基于Delta算子描述下的离散系统存在输出反馈控制器的问题，得到了两个基于Delta算子的Riccati方程，设计了Delta域的输出反馈控制器，使得闭环系统内稳定，且满足从w到z的传递矩阵T_的H_2范数最小，设计了基于Delta算子描述下的离散系统的最优控制器，并与S域和Z域的H_2控制器进行了比较。

W It reduces "flare" or "hot spots" so typical of reflection from white or bright surfaces when the light conditions are very sunny/contrasty.

w 当光源很强或对比度强的时候，它可以减少白色或亮色反光造成的亮点

There is always something to be done: a tin-tack here, a Venetian blind to put straight, a fan to nail up, or part of a carpet to nail down - all of which I can do with my pipe in my mouth; while Carrie is not above putting a button on a shirt, mending a pillow-case, or practising the "Sylvia Gavotte" on our new cottage piano (on the three years' system), manufactured by W.

总是有一些事情要做：1锡钉在这里，一天窗把直，1扇钉起来，或部分的地毯钉了-所有这一切我可以做我在我的嘴管，而嘉莉并不是一件衬衫放在上面的一个按钮，一个枕头修补的情况，或者在我们的新平房钢琴的"希尔薇娅加沃特"对三年系统，由W。

A company of Marines, quite possibly Capt Welby W. Cronk's Company D, 2d Battalion, 1st Marines, makes a school-solution advance up a hill outside the Koto-ri perimeter on 28 November.

一个连的陆战队员，很可能是威尔伯·W·克隆克上尉的陆战1团2营D连，于11月28日朝古土里防线之外的一个山头进发。

Bogsat is,more often than not,an innocent form of cronyism John W.

权宜之计在多数情况下是任人唯亲的无知作法约翰W。

The vector product or cross product of two vectors, v and w .

向量 v 和向量 w 的向量积或外积。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。