查询词典 regressive

Combining the experimental results and theoretical analysis, the following work has been accomplished.(1) Reasons of the decrease of interelectrode capacitance and the increase of discharge gap caused by the powder suspended in dielectric fluid are explained. And the mechanism that surface quality of workpiece improved by powder-mixed EDM is analyzed from this viewpoint.(2) The variation regularity of the percentage of silicon on the machined surface of workpiece has been summarized according to the experiment results when silicon powder was added into the working fluid. The entropy is introduced to explain the reasons for this variation regularity by thermodynamics.(3) The dimensional accuracy is greatly influenced by the overcut resulting from discharge gap and electrode wear in practice application. Empirical formulas for the overcut in EDM and powder-mixed EDM are established based on the experimental results using the ternary linear regressive method in this paper.(4) The influence of main factors on the machined surface characteristics has been evaluated based on the orthogonal experimental design method.

通过一系列普通电火花加工与混粉电火花加工的对比实验，运用工艺实验和理论分析相结合的方法，重点做了以下工作：(1)探讨了粉末颗粒导致极间电容减小、放电间隙增大的原因，并从这个角度解释了混粉电火花加工可以改善工件表面质量的机理；(2)以混合硅粉的电火花加工为例，实验得出峰值电流和脉冲宽度对加工表面层成分中硅元素含量的影响规律，并引入熵的概念从热力学的角度对硅元素含量变化的原因寻找了理论依据；(3)在实际加工中，由于粉末的加入使放电间隙变大，这使得混粉电火花加工的尺寸精度难以控制，本文利用三元线性回归的方法，在实验数据的基础上，建立了两种电火花加工过切量的计算公式；(4)将正交试验法应用于混粉电火花加工实验研究，并通过对实验指标极差的直观分析，得出各电参数对加工指标影响的敏感程度。

Technological developments such as online television and the proliferation of channels are making it harder to defend the regressive licence fee.

在线电视和频道增长这种技术发展也让逆潮流的许可证费用的防守保卫举步维艰。8月的一份益普索。

The accurate prediction of the population in Hunan Province has a great theoretical and practical significance. Using auto-regressive model, Logistic model, as well as the Malthusian model of population, make a scientific prediction to the population in Hunan Province in 2009-2020, and put forward some suggestions on control population capacity.

文章采用自回归模型、马尔萨斯人口模型以及Logistic模型等多种数学分析方法，对湖南省2009-2020年的人口数量做出了科学预测，为湖南省在新的历史机遇期制定相关社会经济发展战略与规划提供相应的依据。

For the simulation,Multidimensional Auto Regressive Models is used,and BIC Rule is used for confirming the rank of MARM.

这些建筑物一般对风更加敏感，大跨度的悬索桥和斜拉桥就是其中的代表。

To solve the inconsistency between planning parameters and practical parameters under a time horizon of master production schedule in process enterprises, an optimized model of integrating auto regressive moving average model with back propagation algorithm of artificial neural network is proposed.

为了解决流程型企业主生产计划时段中计划参数与实际参数的不一致性问题，提出了自回归滑动平均模型与反向传播人工神经网络的集成优化模型。

Finally, we dissect the merit and demerit and applicability of existing regressive analysis methods by analyzing the practical seismic problems.

通过对实际地震问题分析，剖析了现有回归分析方法的优缺点和适用条件。

Combining the practical problem in our country, this paper analyzed the implementation necessity and feasibility of the negative income tax system and used the basic thought of the negative income tax system to put forward the excess regressive income tax system .

本文则针对我国目前存在的弱势群体、城乡收入差距和内需不足等实际问题，分析了负所得税制度在我国实施的必要性和可行性，同时还运用负所得税制度的基本思想提出了超额累退所得税制。

Negative income tax ; weak group ; income gap ; excess regressive income tax system

负所得税；弱势群体；收入差距；超额累退所得税制

It has been criticized on the grounds that it is a regressive tax.

它已经被批评在那之上理由它是后退的税

Regressive method of orthogonal conic substitution with 5 factors had applied to study the effect of different planting density and different application rate of N, P2O5, K2O and organic manure on the grain yield and economic benefit of spring corn, and the simulation model of yield formation of spring corn in the medium fertility field was set up.

2005年在长沙采用5因素2次正交旋转回归设计方法，研究了不同密度和氮肥、磷肥、钾肥、有机肥不同施用量对春玉米产量与经济效益的影响。

Aquatic or marsh-growing fern allies; known to have existed since the Cenozoic; sometimes included in Lycopodiales.

生活于水中或湿地的蕨类；从新生代生存至今；有时归于石松目之中。

The engine was uprated from a 90hp Franklin to a 125hp Lycoming.

改良过的引擎是从90hp到125hp莱康明富兰克林。