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The density function theory B3LYP method with LANL2DZ basic sets is adopted to opt all possible geometrical structures of Tin (n=2~7) and to get the most stable structure. Then, the binding energy and Natural bond orbital of Ti clusters are calculated and discussed.

利用密度泛函理论中的B3LYP方法，选择LANL2DZ基组优化Tin(2~7)团簇得到各团簇的稳定结构，然后对稳定结构的束缚能及自然轨道进行分析。

Your smartest bet is to invest in government bonds if you're in a stable developed country.

你的聪明投注方式是投资于国债，如果你在一个稳定的发达国家。

Corporate leverage, measured as debt to book equity, was stable or falling in most countries before the crisis.

这次金融危机之前，大多数国家公司的债务与权益账面价值之比，也即公司杠杆率，保持平稳或者下降。

Decades of sustained and stable development, Bora Lee has grown into a domestic famous General of the bio-engineering industry group.

十年来的持续稳定发展，宝来利来已成长为国内知名的一家综合性的生物工程产业集团。

The processes of borehole collapse and stable borehole shapes are also studied in the dissertation.

研究了井壁坍塌破坏过程及稳定的井眼形状。

By numerical simulation, it is found that the stable borehole shape is an ellipse with a tip.

数值模拟计算发现稳定的井眼形状是一带尖点的椭圆形。

The stable wave-field propagators of one-way wave equation for Born and Rytov approximations are derived by using the local Born and local Rytov approximation methods in the scatter theory of wave-field propagation, and their application effects in prestack depth migration imaging of wave equation are compared theor...

利用波场传播散射理论中的局部Born近似和局部Rytov近似，分别导出了单程波方程的稳定的Born近似波场传播算子和稳定的Rytov近似波场传播算子，然后从理论和实践上比较了它们在地震数据波动方程叠前深度偏移成像中的应用效果。

Several results have been achieved as followings: 1. The response of stable carbon isotope in karst cave system to surface climate and environment This index can distinguish origin forest from other vegetation, but cannot distinguish transitional eco-environment such as bosk, grassplot and rocky desertification.

洞穴系统稳定碳同位素对地表气候环境的响应通过对4个不同生境洞穴系统的研究，认为洞穴系统稳定碳同位素可以很好地将原始森林植被同其它植被类型区分开；但是不能很好地区分植被退化的过渡类型如灌丛、草坡以及石漠化等。

Taking cave systems under different vegetation in guizhou karst area as study objects, this paper analyzes the spatio-temporal evolution of stable carbon isotope in karst cave system. Vegetation of Liangfeng cave, Qixing cave, Xiniu cave and Jiangjun cave are respectively origin forest, bosk, grassplot and rocky desertification.

本论文在贵州岩溶地区选择了上覆植被分别为原始森林、灌丛草坡、草坡和石漠化的凉风洞、七星洞、犀牛洞、将军洞作为研究对象，对岩溶洞穴系统稳定碳同位素的时空演化规律进行了详细的分析，得出以下几点认识：一。

The stable region＇s boundary curve expression is obtained with the off-focus amount as a design parameter.

分析结果表明，对于子腔预先给定的参量，只要另一子腔满足适当的失调量，整个谐振腔就是稳定的。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。