查询词典 Pulse

The inactivation efficiencies of spark gap switch pulse source and thyratron pulse source matched with reactors were compared. In addition, the effects of humic acids on both PEF and NTP inactivation were studied. The results revealed that the NTP was more prone to be affected by organic compound.

其次，以饮用水为研究对象，系统的考察了PEF和NTP消毒时，单脉冲能量的影响和连续流条件下的杀菌效果，比较了火花隙开关电源和闸流管开关电源与反应器匹配的杀菌效果，研究了天然水体中存在的腐殖酸对PEF和NTP杀菌效果的影响，结果表明水中的有机物对NTP杀菌的影响很大。

The drift and jitter of the output pulse are important parameters of the stability.The experiments and analyses based on homemade VE-4073 thyratron show that the combined effects of DC heating thyratron and two-pulse triggering technique can greatly reduce the drift and jitter of the pulser output.

利用国产VE-4073氢闸管进行了分析和实验研究，通过采用直流加热氢闸管灯丝和氢储存器，以及精确、稳定的双脉冲触发技术，大幅减小了开关脉冲发生器触发延时的抖动和漂移，48 h内开关脉冲发生器输出漂移仅6.1 ns。

In recent years, cold cathode thyratron KN-22 is widely used in circuit, but here KN-22 is replaced by MOSFET. The circuit with MOSFET has stable and credible performance, it can output a pulse of -6.6～-8kV and the pulse width can be adjusted from 5ns to 10ns.

应用冷阴极闸流管KN-22作为开关线路比较广泛，但近年来我们改用MOS场效应管线路代替KN-22，该线路性能稳定可靠，输出脉冲幅度为-6.6～-8kV，脉冲宽度5～10ns可调，触发晃动小于0.5ns，触发延时30～40ns，单脉冲选出率为100%。

The locomotive adopts chopper main circuit of 4 uncombined phases and a control mode featuring accessory pulse generated firstly, main pulse secondly, and central phase shifting of the 4 phases.

该车采用了4相不重的斩波主电路和先发副脉冲、后发主脉冲及4相集中移相的控制方式，并特别试制了适用于斩波的滤波电容器及换相电容器。

On the other hand, with the purpose of fuzzy feature extraction and fuzzy classification device design, the undulatory property of maximum and minimum scattering power corresponding respectively to the maximum and minimum eigen-polarization has been investigated in frequency domain. Furthermore, the anisotropy polarization degree of target, which is determined by both maximum and minimum scattering power of target, has been studied; meanwhile, the dynamic changing characteristic of eigen-polarization on Poincare polarization sphere has been investigated by means of the conception of polarization frequency stability, the research result shows that PSD value has a big jump near π, forming a sharp pulse, and different target has their individual distribution property of PSD pulse.

另外，围绕目标模糊特征提取及模糊分类器的设计，研究了目标最大、最小本征极化所对应的目标最大、最小散射能量随观测频率的起伏特性，考察了由目标最大、最小散射能量共同决定的目标的各向异性极化程度；同时，采用极化频率稳定度的概念，研究了本征极化在Poincare极化球面上的动态变化特性，在最大、最小散射能量相等的频率点上，PSD曲线呈现为幅度接近π值的尖锐脉冲，反映了目标极化散射结构对这一频率跳变极为敏感，但不同目标的这种PSD曲线特征又有很大的不同。

This paper firstly discusses the principle of UWB pulse array beamforming. Then a beamforming scheme is presented based on multi-rate filter bank, which is suitable for UWB pulse signals. The proposed method avoids the hardness of delays control in time domain, and can obtain the uniform frequency invariant array response in such a wideband for UWB signals.

该文提出一种适合UWB脉冲信号的基于多速率滤波器组的波束形成方法，避开了时域处理中延迟控制的问题，同时实现了大带宽范围内的均匀一致的频率不变阵列响应。

First of all, we review the development of ultrashort pulse-laser technique ,and key techniques to upbuild high-energy ultrashort pulse-laser system and estimate of the techniques are introdused.

本文首先回顾了超短脉冲激光技术发展的历史，分析了目前飞秒激光的现状，并且讨论了建立高功率短脉冲激光装置的关键技术。

Shanghai Yahong Electrical Lighting Co., Ltd is the professional manufacturer of High Pressure Sodium Lamp, Metal Halide Lamp, Fishing lamp, color Metal Halide lamp, Uni-form Pulse Start Metal Halide Lamp, Pulse Start Metal Halide Lamp and Mercury Vapor Lamp etc, the company locates in Shanghai, it is very convenient for shipping.

上海亚鸿照明电器有限公司是专业生产高压钠灯，金属卤化物灯，捕鱼集鱼灯和高压汞灯等高强气体放电灯光源的生产基地。公司创建于1997年，坐落在上海市宝山区，直达上海港，交通极为便利。

The aortic pulse wave velocity and pulse pressure are used in evaluation of arterial stiffness.

目前评估大动脉僵硬的方法主要有脉压差和主动脉脉搏速度等。

This paper presents adigital pulse of the specific method,the use of piezoelectric sensors have apulse,after plastic surgery to enlarge,the importation of SCM within the corresponding control,which measured the pulse of one minute,beating number.

本文首要介绍了数字式脉搏计的具体实现方法，利用压电传感器产生脉冲信号，经过放大整形后，输入单片机内进行相应的控制，从而测量出一分钟内的脉搏跳动次数。

Apllied the data of QuickBird-2——the highest resolution remote sensing,and based on the theory and methodology of fractal geometry,we have quantitatively studied remote sensing lineations in Gaolong gold deposit of Guangxi.

采用Quick Brid-2高分辨率卫星遥感数据，通过分形几何学的盒计维数法，定量研究广西高龙金矿区遥感线性构造。

So, sometimes, to change the color can not be your food (referring to the above-mentioned crustacean) has been a sign of boiling over.

所以，有时，来改变颜色，不能你的食物一直是沸腾了的迹象。