查询词典 Pulse

In Chapter 4, the influence of pulse vaccination, time delays and vertical transmission on SEIR and SEIRS epidemic models is investigated.

第四章研究脉冲免疫接种、时滞及垂直传染对SEIR及SEIRS流行病动力系统的影响。

In Section 4.1 and Section 4.2, delay SEIR and SEIRS epidemic disease models with vertical transmission and pulse vaccination are discussed, respectively.

第一节和第二节分别讨论了具有垂直传染和脉冲免疫的时滞SEIR及SEIRS传染病模型。

Objective To explore the methods that how to prepared salbutamol sulfate pulse sustained-release tablets.

目的探讨制备硫酸沙丁胺醇脉冲缓释片的方法。

At three Reynolds numbers, a thermal anemometry IFA3oo is used to measure the average-velocity and time-sequence pulse velocity at different y+ points in the wtulent boundary layer on smooth as well as riblets plate surface respectively.

在三个雷诺数下，分别对二维流场的光滑壁面和沟槽壁面湍流边界层，用热线风速议作了试验。

SOA can be used in the dispersion compensation in fiber transmission system, all-optical regeneration, optical time division multiplexing, and used as preamplifier, in-line amplifier, boost amplifier in signal transmission. SOA can be also used as wavelength converter, optical switch. In signal procession, nonlinear optical loop mirror based on SOA can be used in optical pulse reshaping, and used as high rate (100Gbit/s) demultiplexer, and optical correlator for optical data retiming.

在信息传输方面，SOA用于色散补偿、全光再生和光时分复用和前置放大、线路放大、功率放大等；在信息交换方面，SOA用于波长转换、光开关等；在信号处理方面，SOA构成的非线性光环形镜用于光脉冲整形、光数据信号再定时的光相关器和高速（100Gbit/s）解复用等。

Based on these, the single phase converter system is studied in detail, including the selection of the main circuit scheme, the formation of Sine-wave Pulse- width Modulation signal, the design of the drive and protection circuit of IGBT, and the design of high frequency transformer. Finally, the simulation software is employed to test the effect. And the result is satisfactory.

在此基础上，本文主要对电能质量控制稳定器所需的DC/AC控制电源进行了详细研究，包括主电路方案的选择、SPWM波的生成、IGBT的驱动和保护电路、高频变压器的设计以及闭环电压控制原理，最后进行了输出电压的计算机仿真分析，结果是令人满意的。

Based on the voltage pulse width modulation control strategy with single transistor chopped, the behavior patterns of chopping current and freewheeling current were analyzed under the single phase faults of power converter.

基于电压脉宽调制斩单管控制策略，分析变换器单相功率管故障情况下，斩波电流和续流电流的故障表现。

Line pulse phase splitter.

行脉冲分相器。

Based on multi-conductor transmission line theory, a new model of partial discharge pulse propagating in single phase transformer is established.

中文摘要：本文基于多导体传输线理论建立了放电脉冲在变压器绕组中的传播模型。

In this method, the excitation RF pulse is less than 90? no refocusing 180?

这种方法的射频脉冲小于90度，不需要重聚焦。

He paid $5,000 for this cupcake.

他我这个纸杯蛋糕花了5000美元。

I mean, if you want to, that is

我的意思是，如果你们想吃的话。