原理

The principle of the hydraulic shear system, the change of the shear force in the steel bar cutting-off process, and the structure and action principle of the buffer of the cylinder were analyzed at first in the paper.

文中首先分析了液压剪切系统的原理、钢筋切断过程中剪切力的变化以及液压缸缓冲的结构和作用原理。

This device use the principle of additional DC power supply in main feeding switch, and use the principle of direction of zero sequence power in branch feeding switch.

该装置在总馈电开关处的漏电保护装置使用附加直流电源原理，在分支馈电开关处的漏电保护装置使用零序功率方向式保护原理。

In the thesis,the author systematically discusses the novel semi-inverse method ofestablishing GVPs or SGVPs in fluid mechanics,from 1-D unsteady flow to full 3-Dunsteady flow,from direct problems to hybrid ones.

应用该公式，对于任意用二个守恒型方程描述的流体问题，都可以非常方便地求得其广义变分原理，从而使得建立广义变分原理完全格式化了。

From these particular big systems I have appropriated unifying principles for all large vivisystems; I call them the laws of god, and they are the fundamentals shared by all self-sustaining, self-improving systems.

我从这些具体的大系统中抽象出了一套适用于所有大型活系统的统一原理，并称之为九大定律。这些定律系所有具有自我维持和自我完善功能的系统所共同遵循的根本原理。

According to the basic principle of self-balanced pile test method and the conversional simplified conversion method, the pile bearing capacity between the equivalent loaded piles and self-balanced piles were compared. The influence of negative skin friction on self-balanced pile test was studied. The conversion formulas of pile bearing capacity and settlement were derived.

根据自平衡测试法的基本原理，在传统简化转换法的基础上，通过等效受压桩和自平衡试桩上下桩段受力情况的对比分析，研究了负摩阻力对自平衡测试原理的影响，推得了桩承载力和位移的转换公式。

For solving the deficiency of the oil-belt method, we developed a seeding device test bench including the part of draining sand, draining seed, conveying and controlling by paving sand on conveyer belt.

针对现有黄油皮带法工作原理存在不足，研究采用铺砂原理研制了一套由排砂、排种、输送以及控制等工作部分组成的排种器试验台。

This paper introduces the structure and working principle of how to machine the crown set of rubber-covered roll in paper making using CQ61100 lathe.

介绍了在 CQ6 110 0车床上车制造纸胶辊中高装置的结构和工作原理，利用偏心凸轮和杠杆机构车出的胶辊中高，近似于胶辊的挠度曲线，能满足实际生产需要，其原理也适用于其它车床。

In this paper, the principle of dynamic balancing for rice mill shafts is studied.

研究了碾米机主轴部件的去重动平衡原理，详细讨论了动平衡解耦原理、重径积计算中去重质量质心位置的轴向变动等问

Based on EPS particle,sample is made by coating carbon black on EPS particle and the absorbing property of sample is analyzed by law of scattering and cavity resonance theory.

以EPS为基体，在表面涂覆一层炭黑导电层做成试样，依据瑞利散射原理和球谐振腔原理对该模型的吸波机理进行了探讨，为该类吸波球体的实验研究提供了很好的理论基础。

It introduces China pharmaceutical industry's characters and problems and then analyzes influence factors from the macroscopically, interspaced and microscopically views. Chapter four is the empirical research part in this paper. It introduces the principal of appraisal index and the choosing of the indexes. Then it introduces the building of model and its disposal method in Spss. To get a clear view of principal components analysis the paper analyzes the differentiate and connection between PCA and factor analysis. In this basement, the paper introduces the disposal process and results of the model. The paper then improves the model with entropy right method to eliminate the portrait diversity of data. To validate the model's stability, the paper makes a significance test of the four results.

第四章是本文的实证研究部分，首先介绍了评价指标选取的原则和指标的确定；然后介绍了模型的构建及其在spss中的处理原理，由于主成分分析法不能在spss中直接实现，且其原理和操作都易与因子分析相混淆，所以本节首先分析了主成分分析法和因子分析法的区别和联系，在此基础上描述了怎样在spss的因子分析的基础上利用主成分分析法进行投资价值评价模型的数据处理；然后介绍了模型的数据处理过程和输出结果，随后利用熵权法对模型做了进一步改进，消除了数据间的纵向差异性，并对改进前后的输出结果进行显著性检验，以验证模型的稳定性。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。