原理

Facultative biological model is adopted in municipal wastewater treatment of low nitrogen and phosphorus concentration at higher temperature.

分析了污水生物/生态处理工艺中的CIBR的兼性生化、AAA脱氮除磷二个模式的基本技术原理，酶促湿地协同净化技术原理，并建立了生物与生态协同的氮磷调控原则。

The article mainly introduces the design principles and methods of auto lamps and lanterns, especially giving detailed discussion on the design of auto headlight , and also introduces the design principles of the novel auto lamp internationally and fairy popular in recent days.

介绍了汽车灯具的设计原理与方法，特别对汽车前照灯的设计给出了较详细论述，并对当前国际较流行的新颖车灯设计原理作了介

The principle of the amplifier is get the value of the feedback resistance which can change the gain of the amplifier , then make sure the relay on the right stall, we can get the expectation gain.

本设计实现增益控制的原理是根据OP37G的放大原理公式计算出实现指标增益所需要的反馈电阻值，使用10K继电器选择相应电阻实现增益。

Base on the in-depth analysis into the phase-to-ground fault mechanism and its features, the new concept is presented, which is to change the reference signal for analyzing and processing from the steady signal to the transient signal in a fault case A new principle of the fault feeder line selection with the synthetic logical criterion is presented creatively, which is based on the waveform recognition of the selected time-frequency window.

在深入分析单相接地故障的机理及故障特征的基础上，提出了从基于稳态信号原理转到基于故障暂态信号去分析和处理的新概念；创造性的提出了基于选线时频窗波形识别的综合性逻辑判据的故障选线新原理。

The principle of the regional growing filer is similar to the regional growing used to process digital images.

将区域生长算法引入LIDAR点云滤波，其原理与图像处理中的区域生长原理相似。

After introducing the mechanism of seismic displacement control with dampers, 3 kinds of assessment functions for seismic response control effect are formulated based on the seismic response characteristics of longspan suspension bridges and a new optimal placement method of dampers using penalty function and first order optimization theory is proposed.

从地震位移控制的原理出发，根据大跨悬索桥结构地震响应的特点，建立了其地震位移控制效果的3种评估函数，提出了一种基于罚函数和一阶优化原理的阻尼器最优布置方法。

The operational of piezoelectric fluidic angle velocity sensor and the measure principle of detecting circuit are analyzed in this paper.

本文分析了压电射流角速度传感器的工作原理和检测电路的测量原理。

First, the paper reviews the development and research of AC transfer speed system, introduces the different control strategy of transfer speed system for asynchronous motor, and discusses the basic principle of vector control system for asynchronous motor in detail,including the mathematics model and coordinate transformation of asynchronous motor, the fundamental equation of vector control, the estimation method of rotor flux, the system structure of vector control etc. Then, the paper lays stress on the fundamental principle, control algorithm and realization method in TMS320LF2407 of space vector pulse width modulation technology.

本文首先简述了交流调速系统的发展和研究重点，介绍了异步电机调速系统的不同控制策略，详细论述了异步电机矢量控制系统的基本原理：异步电机的数学模型和坐标变换、矢量控制的基本方程式、转子磁链的观测方法、矢量控制的系统结构等，并重点分析了空间矢量脉宽调制技术的基本原理、控制算法以及在TMS320LF2407中的实现方法。

This paper introduces the basic theory of fly-back topography and current mode PWM firstly. Then the total structure of the single-chip controller is present according to the function requirement and the working theory and the working principle are showed based on its actual application.

文中首先分析了反激变换的拓扑结构及电流反馈模式PWM控制的工作原理，然后根据设计要求完成了AC/DC电源管理集成电路整体结构的设计，同时结合实际应用电路阐述了其工作原理。

The principle of UC3842 was expounded, and the design of single-end flyback switching power was discussed.

首先阐述了UC3842的基本原理，在此基础上提出了单端反激开关电源的原理和设计方法。

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。