用面积原理证明了原函数存在定理；
Application of the area principle may enable some problems to be visual and eaSy.
基于等面积原理，提出了一种新型变频器SPWM波形动态递推算法，分析了该波形的频谱特性，讨论了其谐波抑制能力。
SPWM inverter is widely used in industry. We present a new algorithm for generating SPWM waveform to improve its performance. Our new algorithm is based on area equivalent principle.
运用该原理编制的计算机程序可以计算各切削齿的切削面积、切削体积、切削速度、切削力和切削功率等。
By means of the program established according to the above-mentioned principle, the cutting area, cutting volume, cutting speed, cutting force and cutting power of every tooth can be computed.
主动阻尼器一般根据两种原理进行设计——改变阻尼器阻尼通道的流通面积和改变阻尼器中阻尼液的流动特性。
The controllable dampers are designed according to two basic principles which change damping force by changing the flow area of valves in damper and changing flow behaviors of damping oil.
提出一种应用求面积重心进行目标方位估计的方法，阐明了该方法的原理。
A method of target bearing estimation by means of center of gravity of area is given and the principle of the method is explained.
基于线性化等面积法则和小干扰分析方法，提出储能系统抑制电力系统低频振荡的原理和方法。
Based on the linearized equal area criterion and small signal analysis, the Principle and techniques of Energy Storage System(ESS) Damping Power System Oscillations are proposed in this paper.
介绍了一种基于面积等效原理，采用查表法产生正弦脉宽调制(SPWM)波的方法。
Introduction was made to the method of sine pulse width modulation (SPWM) wave generated by table searching, which is based on area equivalence principle.
针对微小面积，特别是微小“盲孔”底面形貌的非接触精密检测，提出了一种基于直接成像原理的光学结构。
An optoelectronic inspection system based on the direct imagery theory is presented for non-contact observation of the micro-profile of a small area, especially that of the underside of a micro-pore.
水均衡分析法原理是根据岩溶系统径流反推补给面积，进而确定地下水分水岭的位置。
The principle for water balance analysis is to reversely derive the area of water supply according to runoff amount in the karst system, further to determine the position of the groundwater divide.
利用全反射原理，设计了特殊的圆台压平棱镜探头，可线性测量角膜的压平面积。
Based the principle of total reflection, the unique cone applanation prism is designed, by which the applanation area of ocular cornea can be measured linearly.
文中叙述了控制法的原理，设计了面积量算的程序，并列举部分算例说明其应用。
The theory of the control method was described briefly, the program of the area computation was designed, some examples for use were illustrated in present paper.
文中介绍了利用面阵CCD测量不规则平面物体面积的原理和方法。
A simple method for area measurement of irregular plane object using area array CCD was presented.
其原理是根据眼睛或嘴部的外接矩形宽高比及面积判断眼睛及嘴部状态。
The principle is based on the external rectangle ratio and area of eyes and mouth.
在离心铸球工艺中，可应用有效重度和等效压头原理计算转速和内浇口断面积。
It is suggested to apply the principle of effective gravity and equivalent pressure head to calculate the rotational speed and ingate area in the processing of grinding ball by centrifugal casting.
方法根据简化眼屈光学原理，应用几何学计算方法进行后囊有效光学区的面积计算。
Methods According to the refraction of the simplified eye, the posterior capsulorhexis area was calculated by geometric method.
结论根据血流动力学原理提示血管横切面积轻微缩小足以使血流量明显降低，这在老年ed的流行病学中起着重要作用。
Conclusions The slightly narrowed vessel section area can cause notable lowered blood flow volume and act an important role on Ed epidemiology of elderly patients.
给出了GPS定位信息的获取技术，多边形农田面积的计算方法，测量仪软硬件的设计原理等。
The acquisition of GPS positioning information, method of area calculation for polygon fields, and design of hardware and software of the instrument were also introduced.
由画法几何原理可知平面面积等于其正投影面积乘以该平面与投影面夹角的余弦。
According to principle of descriptive geometry, the area of plane equals projection of the plane divided by cosine between plane and projection of plane.
阐述了用数字化仪进行面积量算的基本原理，并进一步对该量算方法的可靠性及精度进行了评定和分析。
In this paper , the principle of area measurement for all blocks on map is discussed through using digitiser, and then assesses the relinbility and anlysis the precision of this measurement way.
探讨了修正平衡面积法的证明方法，证明了该方法在原理上的正确性和实用中的有效性。
The modified balanced area method is proved that is correct in reason and valid for practice.
依据压铸模具浇口计算的基本原理，给出了内浇口截面积和内浇口内金属液流动速度的计算公式。
In this paper, the principles of gate calculation in the die-casting mould are discussed, and the calculation formulas of gate area adn fiow velocity of metal in the gate are given.
介绍了雷达中频回波信号的设计原理，推导了不同波形种类的回波信号表达式，并为目标建立了4种截面积起伏模型。
The design principle of radar intermediate-frequency echo is introduced; different kinds of expression of echo signals are deduced, and 4 categories of wave of target cross section are modeled.
但由于对该原理及机具的研究还不够深入，使得介电分选在生产上未能得以大面积的应用。
But the study on principle and machine of seed separator has not been done thoroughly. So it has not been widely used in seed production.
对偏转磁芯所用的铁氧体材料的磁滞损耗特性进行了分析，介绍了磁滞回线测量的方法原理，由测试结果可计算出磁滞回线面积。
The hysteresis loss characteristics of the ferrite material used in deflection yoke rings were studied. The principle and method of hysteresis loop measurement have been introduced.
在论述铀放射系不平衡原理的基础上，提出了地下水三元补给体系混合比的面积坐标算法。
According to the basic principle in uranium series disequilibrium, a calculating method for the mixing ratio of a three source recharge system of groundwater is raised.
方法：针对MEBO治疗大面积烧伤创面的护理问题，结合MEBO作用原理，分析所应采取的护理措施。
Method: Aiming at the problems in the clinical practice of using MEBO for treating large area burn wounds, effective nursing measures were taken.
简述了钢丝绳无损检测的几种磁化方式，介绍了磁桥路检测法的原理，并结合理论计算和试验得出了钢丝绳截面积变化检测励磁器的结构尺寸。
Summarizes several magnetization methods of detecting steel wires, introduces the theory of magnetic bridge, and gains the structure size of the excitation device through calculating and experiment.
应用控制法量算面积的原理，对福建沿海土地利用现状进行调查量算。
The theory of the control method of area computation was used to compute the land use area of coastal area of present Fujian Province.
为了满足大筛面面积钻井振动筛的需要，介绍了一种基于直线运动和圆运动合成原理的三电机椭圆钻井振动筛。
To meet the need of big screening area of shale shaker, a kind of trimotor ellipse vibrating shale shaker based on synthesizing of linear and circular motion is presented.
为了满足大筛面面积钻井振动筛的需要，介绍了一种基于直线运动和圆运动合成原理的三电机椭圆钻井振动筛。
To meet the need of big screening area of shale shaker, a kind of trimotor ellipse vibrating shale shaker based on synthesizing of linear and circular motion is presented.
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