比较原理

In this paper,the capabilities and demands of water-based coating used for tipping paper are analyzed.

对水松纸涂层专用水性涂料的性能要求和试验原理进行了分析，并通过大量探索性实验和正交实验对水松纸涂层专用水性涂料的性能进行优化，得出了性能比较优异的涂料。

Parallel lineonsametowers is regardedas oneprotectedunit.The directional relay is based on same directional negative sequencecomponents .Because of influence of mutual inductance, directional protection onsingle line has to be latched-up during cross line fault between different phases, thisshortcomingis eliminatedinthis newprinciple.

该原理利用同序负序分量实现方向比较，将双回输电线看作一个被保护单元，消除了原有基于每一回线的方向元件在双回线非同名相跨线故障时受双回线线间互感影响需将保护闭锁的缺点。

This paper then compares three kinds of power conversion circuit applied in it and advances a main circuit which is based on IGBT's power grade nowadays and is applied in high power direct-driven grid-connected wind turbine. It is made up of a six-phase rectifier, two paralleled BOOST chopper circuits and two paralleled SPWM inverters.

文章在比较此种风力发电机的三种类型变流电路拓扑结构的基础上，提出了一种在考虑现有开关器件功率水平的情况下符合大功率直驱并网型风力发电机要求的变流电路拓扑结构，即采用&六相不控整流+两个并联的升压斩波+两个并联的三相SPWM逆变&的电路结构，并对其各部分电路的工作原理进行了分析。

According to the basic theory of the soil mechanics and the comparison of two different experimental methods with different test instruments-electric heat drying cabinet and microwave oven, the water content of 30 groups of cohesive soil and 30 groups of cohsionless soil are tested.

根据土工试验的基本原理，采用微波炉和电热干燥箱两种不同仪器，进行两种不同试验方法的比较，完成了30组粘性土试样和30组砂性土试样含水率的测试。

The article introduces and compares the principle,advantages and disadvantages of and several aflatoxin analysis method.

简单介绍了几种在黄曲霉素日常检测中经常应用的分析方法原理和优缺点，并进行了比较。

The determination principle of sodium cyclamate in foods-gas chromatography was confirmed and discussed.

运用GC-MS可直接对反应产物进行定性的特点，比较了国标方法、国标方法、静态顶空法和静态顶空法四部分实验，从而对测定原理进行推断。

This article introduced RY1000 Thermocompression Distiller,including working principle,technological process,functions and features of the machine,construction of the compre- ssor and its improvement,developed on the besis of heat pump technique, and it was compared with other distillers technically and economically.

本文介绍了应用热泵技术研制成功的RY1000型热压式蒸馏水机的工作原理，工艺流程、机器的性能与特点、压汽机的结构及改进情况，并与其它几种型式的蒸馏水机进行了技术经济比较。

Its enablers are the laws of comparative advantage and economies of scale.

而全球化盛行的原因则在于比较优势和规模经济原理。

According to switching power supply's theory, the circuit analysis, and transformer's foundation, it has analyzed switching power supply's principle of work from the electric circuit work's perspective, and factures a kind of switching power supply circuit diagram, which is quite simple, and is reliable for the operation, and is suitable for using commonly in the present life .

再根据开关电源的理论、电路分析、及变压器的基础，从电路工作的角度分析了开关电源的工作原理，制作了一种比较简单，工作可靠，且适用于目前生活中常用的开关电源。

Based on the cause of formation of fault and the theory of rock distortion on the condition of microdistortion,these explanations are only speculations,and it isn't succinct about the explanation of dynamics mechanism.

这些观点从现有的断层成因模式或应力分析原理出发，强调多种应力方式或多期构造应力场的作用，动力学机制的解释比较复杂。

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。