双角的

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。

Gastaldi and co-workers have observed two types of contrasts in Al-Pd-Mn IQCs: black-white double-lobe and loop-shaped, by using X-ray topography, and the facetted dodecahedral pores by phase-sensitive radiography.

Gastaldi领导的小组在结合利用X射线形貌术以及相位敏感成像术研究Al-Pd-Mn二十面体准晶单晶中的缺陷时发现两种衬度，其中已知黑白双瓣衬度是由于准晶中的五角十二面体空洞引起，而对于环形衬度则除了知道退火行为不同于位错从而不太可能是位错圈外，基本上对其缺陷的几何及性质不甚了解。

Madame Magloire wore a white quilted cap, a gold Jeannette cross on a velvet ribbon upon her neck, the only bit of feminine jewelry that there was in the house, a very white fichu puffing out from a gown of coarse black woollen stuff, with large, short sleeves, an apron of cotton cloth in red and green checks, knotted round the waist with a green ribbon, with a stomacher of the same attached by two pins at the upper corners, coarse shoes on her feet, and yellow stockings, like the women of Marseilles.

她身穿玄青粗呢袍，袖子宽而短，领口里露出一条雪白的围脖，一根绿带子拦腰束住一条红绿方块花纹的棉布围裙，外加一块同样布料的胸巾，用别针扣住上面的两只角，脚上穿双马赛妇女穿的那种大鞋和黄袜。

Results and Conclusion\ This paper gives the concept of bilaternal angle density and coangle density of fractal sets, gives definition of tangent and tangent plane of fractal sets, and discusses its existing conditions.

结果与结论给出分形集的双侧角密度与余角密度的概念，通过它给出了分形集的切线与切平面定义，并讨论了它存在的条

The dynamic characteristics of the toe-in and camber of the rear wheel were measured on the vibration test table. The influences of different input manners were investigated such as the swept input and the stochastic input, the single input and the dual input. And an analysis was made of the testing results and the testing error.

设计制定了基于电－液伺服四通道车辆道路模拟试验台的后轮定位参数测量试验方案，在振动台架上测定该车后轮前束角和外倾角的动态变化特性，研究了扫频信号和随机信号加载和单双侧加载等不同的加载方式对测试结果的影响，并对试验结果进行了误差分析。

In this we have introduced the application of even formula in making certain equivalent double electrons′ atomic states and the generic way of making certain non-equivalent double electrons′ atomic states,and have got the quantificational connection between atomic states′ number and atomic orbital azimuthally quantum number.

偶数定则是确定非同科双电子形成的原子态的一般方法，根据偶数定则得到了二价原子的原子态数与原子轨道角量子数之间的定量关系；并用数学归纳法证明了有关结论。

By using PCR method, a 1kb fragment was gained from Heliothis amigera nuclear polyhedrosis virus genome. The whole fragment was sequenced by dideoxided chain termination methods and a full open reading frame which encode 299 amino-acids was found. The molecular weight of the peptide is about 35 kilodalton.

用PCR方法从棉铃虫核多角体病毒基因组中扩增到了1kb的DNA片段，用双脱氧链终止银染测序法测定了该片段的全序列，发现它含有一个完整的开放阅读框，编码299个氨基酸残基的多肽，分子量约35KD。

In the synthesis of canthaxanthin by selective catalylitic oxidating of βcarotene,CO2 was used as acidifying or alkalizing agent,which controlled reacting system acidity and protected polyene.,producing less by-products and increasing catalylitic oxidation selectivity.In the addition reaction of isoprene with hypochloric acid,1-chloro-2-methyl-3-buten-2-ol and l-chloro-2-methyl-3-buten-4-ol were made by controlling of the acidity with carbon dioxide i...

CO2作为酸碱调节剂和惰性气体，在β-胡萝卜素催化氧化合成角黄素反应中，可以控制反应体系酸性，保护原料中的双键，减少副反应发生，提高催化氧化反应的选择性；异戊二烯氯醇化生成1-氯-2-甲基-3-丁烯-2-醇和1-氯-2-甲基-3-丁唏-4-醇反应中，CO2代替有机酸作酸碱调节剂，控制次氯酸的生成速度，达到调控反应的目的，反应条件温和，不副产固体。

The fiber length has only little influence on the basic density within the growth rings, and significant correlation at 0.01 levels was found between the basic density and the fiber length among the different rings. Only slight negative correlation was found between the basic density and the fiber width within the growth rings, but significant positive correlation at 0.01 levels was indicated between the basic density and the fiber width among the growth rings, contrary to that of fiber length. It was demonstrated that significant positive correlations at 0.01 levels between the basic density and fiber double wall thickness, fiber length to width ratio and double wall thickness to diameter ratio, significant negative correlations at 0.01 levels between the basic density and fiber diameter and diameter to width ratio, only slight negative correlation between the basic density and fiber width both in the same growth rings and among the different growth rings. No significant correlation was found between the basic density and the vessel morphological features, nor was the tissue proportion in the same growth rings. But among the different rings, it was found there was significant positive correlation at 0.01 levels between the basic density and the fiber proportion among the different rings, and significant negative correlation at 0.01 levels between the basic density and vessel-elements proportion and ray proportion, only slight negative correlation between the basic density and the parenchym proportion. Significant or no significant negative correlation was found between the basic density and the microfibril angle in the same growth rings, but significant negative correlation was found between the basic density and the microfibril angle among the different growth rings.

生长轮内纤维长度对基本密度的影响不大，而在不同生长轮间纤维长度与基本密度达极显著正相关，纤维宽度与此相反，同一生长轮内纤维宽度与基本密度极显著负相关，不同生长轮间只有微弱负相关；基本密度与纤维双壁厚、长宽比、壁腔比在生长轮内和生长轮间均呈极显著正相关，而与胞腔直径、腔径比均呈极显著负相关，仅与纤维宽度呈微弱的负相关；导管形态对基本密度的影响不显著；同一生长轮内组织比量对基本密度的影响也不显著，但不同生长轮间基本密度与纤维比量呈极显著正相关，与导管比量和木射线比量呈极显著负相关，与轴向薄壁细胞比量仅呈不显著负相关；生长轮内基本密度与微纤丝角呈显著或不显著负相关，但在生长轮间这种负相关达到极显著水平。

The numerical results indicate that the collimating performances of two lens changed little as the increasing of the refractive index and this made it possible to choose the material of the lens in more field.Theoretically,the radiation angle of laser diode beams in the quick axis can be compressed under 0.1 mrad.

结果表明：这两种柱透镜的准直效率随折射率的变化不大，这在一定程度上提高了透镜材料选择的灵活性；并且理论上，共轴双半椭圆柱透镜可以将半导体激光光束快轴方向的发散角压缩到0.1 mrad量级。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐