象限

一个符号出现在屏幕上方的一个象限里。

A symbol appears in an upper quadrant of the screen .

撤去平台后，模型组在原平台所在象限的时间百分比明显降低（P＜0.05）。

Without platform , the platform quadrant time percentage of model group was lower than the control ( P < 0.05 ) .

电压型PWM四象限变流器电压控制器的设计与系统仿真研究

Design and Simulation of Voltage Controller for Voltage-Type PWM 4-Quadrant Converter

并得到下列结果：（1）当ac≥b~（1/2）时，系统（）在第一象限内无极限环；

( I ) When , there exists no limit cycle of the system () ;

新型集成阵列四象限CMOS光电传感器的研制

Research of a New Integrated Arrayed 4 Quadrants CMOS Photo-Electric Sensor

四象限变流器PWM双闭环控制系统的计算机仿真

Computer simulation of PWM double closed loop control system for 4 q converter

接收系统的信号处理电路，将四象限光电探测器输出的电流信号转换为电压信号并放大、处理，最终得到能够反映光斑中心在x方向和y方向偏移量的电压信号。

Signal processing circuit of receiving system covert current signal from PIN four-quadrant photo detector to voltage signal .

本文提出了一种CMOS四象限模拟乘法器。

A CMOS four-quadrant analog multiplier is proposed in the paper , which .

一种低电源电压的CMOS四象限模拟乘法器

A Low Power-Supplies ' CMOS Four-Quadrant Analog Multiplier

高频电流模四象限CMOS模拟乘法器

CMOS four-quadrant analog multiplier with high frequency capacity

本文一种新颖的不使用CCD或四象限传感器的光束定向机理。

In the paper , a novel beam orienting mechanism utilizing no CCD or quadrant detectors is presented .

线段AB是处在第二象限中。

The line AB lies in the second quadrant .

电阻耦合型神经MOS晶体管及其差分四象限模拟乘法器

The Resistance Coupling Neuron MOS Transistor and It 's Difference Four-quadrant Analogue Multiplier

基于SPWM调制的2种电压型四象限变流器比较与仿真

Comparison Two Voltage-source 4-quadrant Converter and their Simulation Based on SPWM Modulation

以此为X、Y轴，人物数据库主题分布在三个象限内。

If we take the above orientation as X and Y axes , the people data base theme will be distributed in 3 quadrant .

结论：视网膜鼻侧象限及视网膜中周部是NP最易发生的部位。

Conclusions : NP was usually occurred at the nasal quadrant and the mid-peripheral of retina .

GPS信号跟踪算法主要包括载波的四象限鉴频器算法、载波频率锁定环和码的延迟锁定环算法。

The GPS signal tracking algorithm includes a 4-quadrant frequency discriminator of the carrier , an FLL of carrier and a DLL of the code .

由四象限脉冲整流器和PWM逆变器组成的电压型牵引变流器已成为交流供电的电力机车、电动车组主变流器的基本电路形式。

Voltage traction converter which consists of 4qs and PWM inverter is the elementary circuit of electric locomotive 's main converter .

提出了一种新型四象限CMOS模拟乘法器电路，其核心结构为线性化压控源耦对。

A new current mode CMOS four quadrant analog multiplier consisted of two voltage controlled source coupled pairs is presented .

基于螺旋桨特性四象限Chebyshev拟合式的深潜艇正倒航变速推进模型

Chebyshev Fit of Propeller Properties across Four Quadrants and Propulsion Model of DSV

空间光通信探测技术中象限探测器（QD）的研究

Reasearch of Quadrant Detector ( QD ) in Optical Communication Technology

在平台象限的游泳时间四组比较无显著性差异（P0.05）。

There was no significant difference of the swimming time spent in the platform quadrant of the rats in four groups ( P0.05 ) .

方法采用KAP问卷对570名育龄妇女进行了调查，运用了象限分析。

Methods Survey on 570 women by KAP questionnaires , use quadrant analysis .

实现了非线性PID的悬浮控制算法；设计四象限斩波器及其驱动保护电路、模拟信号预处理电路；

The non-linear PID algorithm is implemented , the quadru-quadrant PWM amplifier and its driving and protection circuits are designed , the analog signals preprocessing circuits are designed .

在理论分析可行的前提下，设计了系统硬件平台，包括混合磁铁设计、四象限斩波器设计和基于DSP的控制电路设计。

On the premise that theoretical analysis is feasible , a experiment console is designed , including blending magnetic iron , four-quadrant chopper and digital controller based on DSP .

DAB法观察大鼠视网膜铺片的组织化学反应情况，光学显微镜下分四个象限计数高、中、低CO活性视网膜节细胞数，间接反应视网膜细胞CO活性变化。

The retina stretched preparation were processed with CO histochemical reaction and the number of CO positive retina ganglion cells were studied under light microscope .

InGaAs四象限探测器

InGaAs Four - quadrant Photo - detector

地震分两种类型：一种是微震活动，初动呈象限分布的双力偶滑动型震源机制，S波能量高于P波能量。

There are two types of microearthquakes : one is the microearthquakes the first motion of which distributed in a quadrant belongs to double-couple sliding focal mechanism , with S wave energy higher than P wave energy .

螺旋桨特性四象限Chebyshev拟合式的建立与深潜艇直航全工况运动仿真的实现

Chebyshev Fit of Propeller Properties across Four Quadrants and Realization of All-round Movement Simulation along X-shift of DSV

在相同条件下，G.为同时获取离焦方向和离焦量，二象限探测器是最简探测器。

The vesicle amount of G. Dual-quadrant detector is the most convenient detection tool in getting both defocus direction and amount at the same time .