回归水

The regression analysis of the hydrodynamic data with the 24 orthogonal series of JDYW models in open water has been carried out, and the estimated formulae of C subscript N(subscript α and C as coefficient of center of pressure are provided, which can be used to design rudder or fin in the vehicle.

JDYW是一种高性能对称翼型，文中对24个正交系列模型敞水流体动力测试数据作了回归分析，给出了C下标 N(下标α和压力中心系数C的估算公式，可供船舵或鳍设计时使用。

Type Decline Characteristics Linear Regression analysis Water drive Curve

类型；递减；特征；线性；回归分析；水驱；曲线

By solving the quadratic regression model equation with appropriate statistic methods, the optimal conditions of cultivation time, temperature and ratio of substrate to water are 32.8 h, 31.2 ℃ and 1:1.24 respectively.

通过对二次多项回归方程求解得知，在上述自变量分别为培养时间32.8h，培养温度31.2℃，固水比1：1.24时，糖化酶的产量从最低值656.2μ/g干曲提高到1645.1μ/g干曲。

On the basis of the previous results and according to the central composite experimental design principles,the method of response surface method with 3 factors and 3 levels was adopted.then the factors influencing the technological parameters were determined by means of regression analysis.response surface and contour were finally graphed with the extraction rate as the response value.resultsthe optimum conditions of lycium barbarum polysaccharides extraction were as follows:the ratio of material to solvent of 1∶32,extraction temperature of 84℃ and extraction time of 2.3 h,one time extraction.conclusionthe yield of lycium barbarum polysaccharides is 11.10% under the optimum conditions.

方法在单因素实验基础上选取实验因素与水平，根据中心组合（box-benhnken）实验设计原理采用3因素水平的响应面分析法，依据回归分析确定各工艺条件的影响因子，以多糖提取率为响应值作响应面和等高线。结果在分析各个因素的显著性和交互作用后，得出枸杞多糖水浸提的最佳工艺条件为：料液比1∶32；浸提温度84℃；浸提时间2.3h；浸提1次。结论在最佳工艺条件下，枸杞多糖的实际提取率可达11.10%。

With ripe banana as raw material, the total extraction rate of cellulose and the yield of large-molecule products in the process of starch enzymolysis characteristics of banana pulp were researched by using limited hydrolysis method of amylase, and the best process parameters were confirmed through general revolving combination design of quadratic regression and response surface analysis.

方法］以成熟香蕉为原料，采用淀粉酶有限水解法，研究其果肉淀粉酶解特性过程中纤维素的总提取率及大分子产物得率，并通过二次回归通用旋转组合设计及响应面分析确定最佳工艺参数。

Twenty-four sites were sampled over three different periods in three rivers of the plateau. At each site, a riffle and a pool were identified, in a stretch of about 100 m, as separate habitat units, and were sampled for fish and physical habitat. A preference index and logistic regression were used to determine the important habitat variables for each species.

分3个时期选择3条河流的24个地点进行取样，每个样点长100 m左右；分急流和回水湾两种生境类型作为独立的栖息地单元取样，据此观察研究对象和物理环境间的关系；用喜好指数和逻辑回归分析每种鱼重要栖息地是否稳定。

Based on the tests in laboratory on the concrete composed of manufactured sand and fly ash,the relationships of the strength of concrete and the binder to water ratio are analyzed by the method of liner regression and the coefficient values of α-a and α-b are determined respectively.

根据实验室内进行的人工砂混凝土和人工砂粉煤灰混凝土配合比试验结果，采用线性回归统计分析了人工砂混凝土和人工砂粉煤灰混凝土强度与水灰比的关系，求出αa，αb系数。

Secondly, the subsample study based on the linear regression model shows that although taking the instability of economic structure into account, the estimation of exchange premium to the change of spot exchange rate is obviously negative, which meas the outlier or breakpoint is not the reason that empirical research refuses the efficiency of the American and the Japanese foreign exchange markets.

其次，基于线性回归模型的子样本研究表明，即使考虑了经济结构突变，远期汇水对即期汇率变动的估计仍显著的为负值，即统计上数据异常和结构突变并不是拒绝美元和日元外汇市场有效的原因，因此我们需要去探讨理论本身的缺陷和不足。

The halocline in the Lingdingyang is more important for the concentrations of DO in bottom water than the thermocline.

通过一个简单的二元线性回归模型分析，径流冲淡水与外海水之间的盐度层化作用比温度层化作用对底层溶解氧的浓度水平影响更为明显。

The regression analysis was adopted to study the relativity between dt, ad and the toxicity of ra.results ra decocted liquids could decrease voix pedis tumefaction of bizheng model animals, but had no effect on the growth and development and hematopoietic system of model animals.

将结果进行多元回归分析，得出川乌煎煮时间、剂量与毒性的相关性。结果川乌水煎液能抑制痹证动物的足跖肿胀；对模型动物的生长发育无明显影响；对其造血系统无明显毒性；对其肝脏、肾脏、心脏有一定毒性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。