原理

In today's experiment we use a household hair dryer to demonstrate the laws of aerodynamics.

今天的实验中，我们利用家用吹风机来说明空气动力学的原理。

A project is brought forward about test and control system based on VI for bracket of aerofoil automatic rivet machine in this thesis, the project which has logical framework is designed with advanced theories, it introduces the latest technology and gives attention to practicability.

本论文提出了基于虚拟仪器的机翼自动钻铆机托架测控系统的技术方案，该方案设计原理先进、结构合理，既采用了最新的技术，又充分考虑了系统的实用性。

And then, after establishing the optimization model in accordance with the principle of optimal design of shape formulas, we could obtain the numerical optimization aerofoil on the basis of NACA0018 master pattern solved by the Fluent console, and discuss the reasons of improvement of power coefficient.

然后按照形函数的优化设计原理，建立了优化模型，用Fluent平台求解，在NACA0018母型基础上得到数值优化翼型，并探讨了能量利用率提高的原因。

According to these disadvantages, this paper brings forward anew method :CO2- aerometry to determine COD by testing the volume of CO2produced by the oxidation reaction in airtight condition.

该方法的应用原理是通过测定在密闭条件下氧化反应产生的 CO2 气体的体积，并根据相关公式计算COD 值。

Proceed from the requirements of aerial remote sensing on photograph processing, the paper outlines the advantage of using automatic processor, describes principle and method for dynamic sensitometering and quality control, and states preliminary use of automatic processor in aerophotography and image reproduction.

本文从航测遥感发展对摄影处理提出的要求出发，阐述了使用自动冲洗机的优点、动态感光测定及质量控制原理和方法、自动冲洗机在航空摄影及图象复制中的初步运用。

Thismethod adopted affine transformation model and a Lie derivative-based analytical algorithm.We introduced the process and characters in extracting information of biological visionsystem, studied the feasibility of the generalized Gabor function used as receptive fieldfunction in extracting information and analyzed affine transformation group and Liederivatives. Finally, we deduced the mathematical denotation for Lie derivatives, i.e. theinfinitesimal generator of the geometric distortion in affine transformation.

对生物视觉信息提取的过程及特点进行了介绍，其中主要研究了广义Gabor函数作为感受野函数提取初级视觉信息的可行性；对仿射变换作为外界图像信息在视觉成像系统上的投影模型的原理进行了初步讨论；对Lie变换群微分算子用于提取仿射变换不变量的分析方法作了剖析，并推导了该方法中关键部分——仿射变换Lie微分算子的具体表达式，也就是几何变形无限小微分算子的计算表达式，使下一步编程实现该方法成为可能。

Since the affixture machine is a typical complicated, tandem driving, time changing and non-linear winding system, it is rather difficult to control constant tension.

介绍了复贴机张力控制及其基本原理，由于复贴机是一个典型的复杂、联动、时变、非线性卷绕系统，对其进行恒张力控制具有相当的难度。

The principles of the protogenic afflatus and palingenetic afflatus in the theory about ancient Chinese literature composition dis- closed the arcanum of afflatus and provided us with the third way to get acquainted with it.

中国古代的文学创作理论中精密的"原生灵感"、"再生灵感"原理深刻地揭示了灵感的奥秘，为我们提供了认识灵感的第三条途径。

According to the specific property of the red-rock,using campare tests, study the key technology of the road slope protection.Find the plants and the planting ways;grass and the rate;the season to plant and the biological protection on different slope.On the basis of analyzing the result of field experiment and field survey, and the experience of biological protection test and design on landscape ecological afforestment construction of highway in Hunan Province.

本文针对红砂岩的特性，采用对比试验的方法，主要针对公路边坡防护的高新技术开展研究，研究适用于湖南省红砂岩地段边坡防护用的植物与配置模式、草种与草种配比、播种时间及边坡生物防护方法的施工原理与工艺流程及各种防护方法适用的边坡类型。

In the diagnostic expert system of a set affusion pump employs such a principle.

在某油田注水泵机组故障诊断专家系统中应用了此种原理。

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。