和指数

The exponential model and double exponential model were the most practical and applied models for secondary clarifier simulation.

在二沉池模拟中，指数模型和双指数模型较为实用且应用较多。

This chapter also compare the beta coefficient of market index regression to beta coefficient of iron board index regression. Chapter three mainly discuss the current application of beta coefficient and problem when applied.

同时也做了钢铁板块上市公司β系数估计量的显著性检验以及用市场指数回归的β系数和钢铁指数回归的β系数的比较研究。

By analysis of such models, a method, which is used to find out the region of convergence and to study the local stability for strong nonlinear system, are derived. Thus, we can consider the strong nonlinear neural networks using such method.

利用新的比较方法，考虑了具变时滞和常恢复率的同质人群HIV梯度传染病模型，得到了一个阈值，当阈值小于1时，疾病消除平衡点全局指数渐近稳定，当阈值大于1时，传染病平衡点存在唯一，同时得到该传染病平衡点局部指数渐近稳定的充分条件。

Via the stochastic averaging method, the four-dimensional system is reduced to a two-dimensional one. Through the logarithmic polar transformation , and then Girsanov theorem and Feynmann-Kac formula, the backword differential operator is then obtained. By expanding the eigenfunctions as a Fourier cosine series, the approximate analytic expansion of the moment Lyapunov exponent is then obtained.

首先在经典二元机翼颤振方程加入随机激励，通过随机平均法，Girsanov定理和Feynmann-Kac公式得到关于矩Lyapunov指数的特征值问题，其次采用Fourier余弦级数对特征函数进行正交展开得到系统矩Lyapunov指数的近似解析式。

Consumer price index - A cost of living index that measures the total cost of goods and services purchased by a typical consumer within a country.

消费价格指数-生活费用指数的措施的费用总额的货物和服务采购的一个典型的消费者在一个国家内。

The integer and fractional part comprise decimal digits; the exponent part is an e or E followed by an optionally signed decimal exponent.

整数和分数部分包括十进制数；指数部分是一个 e or E 后面可选的跟着一上二进制指数。

To observe the effect of suaeda salsa seed oil on total cholesterol, Triglyceride, index of clearance of immunological deficiency mouse, and index of phagocytosis in the mouse.

目的 观察碱蓬籽油对高脂小鼠总胆固醇和甘油三酯含量及免疫力低下小鼠廓清指数、吞噬指数的影响。

CPI data can at least appear to be pleased, but the PPI and the GDP deflator is less reassuring.

CPI数据至少可以看起来很高兴，但生产者价格指数和GDP平减指数是不太放心。

Dendrochronology study in Kunming is feasible. RES Tree ring chronology has high sensitivity, but STD chronology can explain more population information.

5通过对云南松树轮样本的年代学和气候学分析可知，在昆明地区可以利用云南松进行树木年轮研究，所建立的树轮宽度指数年表中自回归年表的敏感性较高，但去趋势序列年表反映的群体信息更多；轮宽与气候要素的显著相关关系，使利用轮宽变化的指数年表重建气候变化的历史过程具有可能性。

Based on distance matrix and branch vertex of atoms in a molecula,a new topological index Hz has been established to be used in researching physical and chemical properties of alkanes .

基于距离矩阵，结合分子中各原子的支化度，构建了一种新的拓扑指数Hz，并用于研究饱和链烃类化合物的性质，获得了比较满意的结果，与其他已有的拓扑指数比较，Hz具有良好的结构选择性和相关性。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。