下水平

So, the aromaticity of acenaphthenyl groups in C_2 gum should be the least. In order to explain the reason, quantum chemical calculation is utilized. The optimized geometrical structrures of condensed aromatics in C_1 gum, C_2 gum and C_3 gum are calculated at B3LYP/6-31G* levels. We find that some phenyl groups in acenaphthenyl groups are coplanar and have the largest conjugated structure.

为了解释其原因，我们利用量子力学方法进行了计算，研究了三种稠环基团在B3LYP／6-31G*基组水平下优化得到的几何结构，发现苊式多苯基苯基中的萘环和中间的苯环共面，电子离域性最大，而其他二者所有苯环都不共面，发生了明显地扭曲；同时，在优化几何结构的基础上，对三种化合物进行了前线分子轨道的分析，利用密度泛函理论方法(density function theory，DFT)计算了稠环基团的最高占有轨道和最低未占轨道之间的能量差，即能隙，发现C_2胶上苊式多苯基苯基的Eg最小，解释了C_2胶具有最好的辐射保护效果的原因。

The purpose of the experiment is to realize the prokaryotic expression of β-glucosidase gene from Acetobacter xylinum ATCC 23769, which will be used to produce enzyme preparation so as to develop the efficiency of extracting resveratrol from plants. Aspergillus niger β-glucosidase gene is cloned both at DNA lever and cDNA lever, which will lay a foundation for further research about its expression in Saccharomyces cerevisiae in a secretory form with the aim of increasing resveratrol contents in wines.

本实验实现了木醋杆菌β-葡萄糖苷酶基因的原核表达，目的是为了生产粗酶制剂，用于提高从植物中提取白藜芦醇的得率；分别在DNA和cDNA水平从黑曲霉中克隆β-葡萄糖苷酶基因，为下一步在酿酒酵母中实现分泌表达以提高葡萄酒的白藜芦醇含量的研究奠定基础。

In this paper, juvenile Amur sturgeon was targeted and set different levels of salinity, pH and capture time, we investigated the regulations of acute salinity stress, chronic salinity, pH and capture stress on growth performance and physiological system of Amur sturgeon, Acipenser schrenckii.

本研究以施氏鲟稚鱼和幼鱼为对象，设定不同盐度水平、pH范围和捕捞时间，完成了急性盐度胁迫、慢性盐度和pH联合作用以及慢性盐度胁迫下急性捕捞胁迫对施氏鲟血液生理、生化、生长、免疫等部分指标的测定。

The result shows that the acumination of the particle can result in stress concentration of particle tip; it can lead to destroys on the particle tip in the lower stress lever.

结果表明，颗粒的尖锐化会导致颗粒的尖端应力集中，致使低应力水平下材料在尖端处发生断裂。

So, Putting the three financial variables together, analyze their dynamic behavior、research adjustive mechanism of economic growth and mechanism of financial risk control is helpful for perfecting financial market、improving the level of monetary policy. This paper consists of several parts.

因此，将货币供应量、汇率和利率三者放到一起，分析它们的动态行为，探讨在这个框架下的经济增长调节机制和金融风险控制机制———金融变量对经济增长的调节与控制，对完善我国金融市场、提高货币政策调控水平具有重要的理论和实践意义。

According to the modified Rytov method for the optical wave propagation and withconsidering the effect of the turbulence spectrum model with zero and non-zero innerscale in addition to the finite outer scale, the solution to the scintillation index as afunction of the Rytov variance is obtained from weak to strong fluctuation regions forGaussian beam propagation along the horizontal path.

根据光波传播的修正Rytov 方法，得到了高斯波束水平传输时在零内尺度湍流谱模型及考虑湍流内尺度效应和外尺度效应条件下，从弱起伏湍流区到强起伏湍流区闪烁指数随Rytov 方差变化的计算公式。

The characteristics of Agrostis stolonifera turf on campus of Tibet Agriculture and Aninmal Husbandry College were studied. The resulted indicated that this turfgrass had a low value in establishing speed, coverage, color, texture, intensity and density, and it was not fit for turf establishment on the campus under the current low-investment and rough management condition.

研究了西藏林芝地区使用匍茎翦股颖Agrostis stolonifera建立的校园草坪和人行道草坪的一些坪用特性，结果表明，从匍茎翦股颖的生长状况看，该种草坪草在成坪速度、盖度、色泽、质地、强度、密度等方面评价较低，在林芝地区现有的低资金投入和粗放管理水平下该种草坪草不适合作为校园和人行道草坪。

Adult male Wistar rats were randomLy allocated to 3 groups:control group, stone-forming group, Alisma Orientalis group. Reverse transcription polymerase chain reaction technique was used to examine bikunin mRNA expression levels in rat renal tissue.

将Wistar大鼠随机分成对照组、结石模型组、泽泻组，采用半定量逆转录聚合酶链反应检测大鼠肾组织bikunin mRNA的表达水平、镜下观察肾组织草酸钙晶体分布，同时检测大鼠血生化、肾钙含量、24h尿钙和尿草酸的分泌量。

In this thesis, we investigate the possible reaction product distribution and mechanism of the carbon monophosphide CP radical with unsaturated hydrocarbons allene CH_2CCH_2 and methylacetylene CH_3CCH at the B3LYP/6-311+G, QCISD/6-311++G(2df,2p), and G2 levels of theory.

中文摘要：本文在B3LYP／6-311+G和QCISD／6-311++G(2df，2p)及G2水平下研究了CP自由基与CH_2CCH_2以及与CH_3CCH两反应体系的产物分布和反应机理。

In this thesis, we investigate the possible reaction product distribution and mechanism of the carbon monophosphide CP radical with unsaturated hydrocarbons allene CH_2CCH_2 and methylacetylene CH_3CCH at the B3LYP/6-311+G, QCISD/6-311++G(2df,2p), and G2 levels of theory.

本文在B3LYP／6-311+G和QCISD／6-311++G(2df，2p)及G2水平下研究了CP自由基与CH_2CCH_2以及与CH_3CCH两反应体系的产物分布和反应机理。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失