查询词典 O

This paper presents a fast algorithm based on the measured equation of invariance.Conformal meshes are made along the surface of two-dimensional scatterer.Renumbering of nodes changed the original sparse matrix into band one,and the consumption of computer memory and CPU time decrease from O(N2) to O.Via this new algorithm,electrically large problem can now be rapidly solved.

提要 本文基于不变性测试方程法提出一种快速算法，在二维散射体表面建立共形差分网格后，通过对节点的重新排序，将原问题中的稀疏矩阵变换为带状稀疏阵，从而使占用的计算机内存和计算时间均由O(N2)下降为O，可以解决原来无法计算的问题。

The average δ〓O value of brachiopod shells from Givetian in Longmenshan area is comparable with those of the same geologic time from North America and Australia. The three continents were in the same latitudes although the Australia was in the south hemisphere, hence the annual average temperatures.

5龙门山地区中泥盆世腕足化石的δ〓O与同时期北美和澳大利亚腕足化石的δ〓O值非常接近，它们当时都是地处低纬度地区，海水年平均温度相同，因此三个地区海洋的δ〓O值也应相同。

And the two complexes have been found to be single-strand DNA cleavers in the presence of glutathione/O〓 or ascorbate/O〓 and DNA-nicking efficiencies of two complexes are ＜.

这两个配合物在抗坏血酸/O〓或谷胱甘肽/O〓的激活下均呈现化学核酸酶活性，它们的核酸酶活性大小为：＜。

This method is an improvement of existing methods to construct nearly order elliptic curves using complex multiplication. To get elliptic curves with nearly prime orders, the time complexity of this method is O , but to get elliptic curves with prime orders, the time complexity arises to O .

该算法是现有利用复乘构造近乎素数阶椭圆曲线方法的改进，利用该算法构造近乎素数阶椭圆曲线的时间复杂性为O，同时，该算法可用于构造素数阶椭圆曲线，但时间复杂性上升为O。

Its time and space complexities are O and O respectively.

它的算法时间复杂度为O，空间复杂度为O。

In order to reduce the composite probability of Cd and O, simultaneity , to enhance the Cd-N covalent characteristics and improve the hole concentration, it is important to control the proper concentration of Cd and O.

研究表明共掺体系中，适当控制Cd和O的浓度，可以减小Cd和O的复合机率，加强Cd-N的共价特性，对改善AlN的p型特性有重要意义。

Knitting oil stable at high and low temperature was prepared by emulsification between 20# white oil as base oil and O-3 and O-6 of narrow molecular weight distribution, Span-80, Tween-80, PK, and barium petroleum sulfonate as emulsifier. Condensation point, residue analysis, emulsifying properties, permeability, antistatic performance and application effect were used to characterize knitting oil.

选择温度稳定的20#白油为基础油，选择窄分布O-3和O-6、Span-80、Tween-80乳化剂，并加入PK和石油磺酸钡进行温度稳定型针织机油的合成，并采用残渣分析法、凝点测试、乳化性能、渗透性能和抗静电性能测试以及实际使用效果对所研制的针织机油进行表征。

The influences of the inclusion of Na~+ into each conformer (C7AB, C7"AB, C7eqB, C5A, C7axB orα"B) of AD molecule on the Ramachandran angles of molecular backbone and the hydrogen bonds in AD moiety were discussed in detail. It was found that in the forming process of bidentate structures of Na~+-AD ion-complexes, the original H-bonds in AD molecule were fully broken down, accompanying with the new formation of the two Na-O bonds.

论文中详细探讨了Na~+-AD络合离子六种构象的空间构型，分析了丙氨酸二肽与Na~+作用过程中AD分子骨架Ramachandran角及分子内N(1)–H(1)…O(2)、N(2)–H(2)…O(1)、N(1)–H(1)…N(2)和N(2)–H(2)…N(1)氢键的变化，研究发现Na~+与AD分子形成双齿结构时，AD骨架中原先的氢键全部被破坏，继而形成了两个新的Na-O键；Na~+与AD分子形成单齿络合离子时，AD骨架中原先的氢键或者得到增强或者断裂之后出现新的强度更大的氢键。

Several days ago, my German friend Conny left a message on my f/a/c/e/b/o/o/k, who is currently teaching at the University of Hull.

前些日子，我在 HULL 大学教书的德国朋友柯尼给我在 f/a/c/e b/o/o/k 上留言，寻求帮助，大意如下

On the basis the present results and the previous reports on syn-syn carboxylate-bridged Ni complexes, we find that the coplanarity of Ni-O-C-O-Ni dominates the magnetism.

基于本工作和文献报道的含syn-syn 羧酸混合桥联镍配合物的磁性数据，我们总结出下面结论：Ni-O-C-O-Ni的共面性与否决定了配合物的磁性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。