It is shown that, variation of the sign and size of the chirp coefficient has considerable effect on pulse propagation property, and the effect is closely relative to size of the pulse area.
研究结果表明，啁啾系数的正负及大小的变化对脉冲传播特性有显著的影响，而且这个影响与脉冲面积的大小密切相关。
The image of target was generated based on range information. Basic design parameters of the system including the number of array elements, the size of the image, the pulse repetition frequency and the peak power of linear diode laser array, were chosen based on the calculation of the element laser footprint size.
在对阵列单元激光脚印尺寸大小计算的基础上，确定了该探测系统的基本参数包括所需线阵元数、生成图像大小、半导体激光器阵列的脉冲重复频率和峰值功率等，为系统的工程实现提供了理论依据和设计指导。
Basic design parameters of the system including the number of array elements, the size of the image, the pulse repetition frequency and the peak power of linear diode laser array, were chosen based on the calculation of the element laser footprint size. The methods of choosing basic design parameters provide guideline for hardware realization of the system.
在对阵列单元激光脚印尺寸大小计算的基础上，确定了该探测系统的基本参数包括所需线阵元数、生成图像大小、半导体激光器阵列的脉冲重复频率和峰值功率等，为系统的工程实现提供了理论依据和设计指导。
Based on mixed-signal ISP flash MCU C8051F005 and full-bridge pulse width modulation integrated circuit 3955, a microstepping driver with high performance, simple structure and ultra small size was designed for two-phases hybrid stepping motors.
以高性能单片机C8051F005和全桥脉宽调制(PWM，Pulse Width Modulation)驱动电路3955为核心实现了一种结构简单的高性能、多细分、微型化两相混合式步进电动机驱动器。
Improvement of the resolution of pulse discrimination analysis-optical emission spectrometry is expected in the coming years. Size, number and spatial distribution can be recorded.
今后若干年里，脉冲分布解析原子发封光谱法的分辩率有望得到提高，可以获得夹杂物的尺寸、颗粒数以及空间分布的信息。
With the advantages of ultra-lowpower, high integration of MSP430 and the technology of pulse intermittent supp lying power, the problem of ultra-lowpower-consuming and small size of portable instrument is solved.
充分利用 MSP430超低功耗和高集成度的优点，同时，采用脉冲间隙式的电源管理技术，解决了传感器制成便携式设备时遇到的低功耗和小型化的问题。
The exact pressure to which the tourniquet should be inflated has not been determined. Evidence indicates that pressures greater than necessary have been used for many years. The correct pressure depends somewhat on the age of the patient, the blood pressure, and the size of the extremity. Reid, Camp, and Jacob[1] used pneumatic tourniquet pressures determined by the pressure required to obliterate the peripheral pulse using a Doppler stethoscope; they then added 50 to 75 mm Hg to allow for collateral circulation and blood pressure changes.
止血带加压所需的精确压力尚未确定，有证据表明许多年来我们所使用的压力偏大，真正需要的正确压力在某种程度上要根据患者年龄、血压以及肢体的周径来确定，Reid、Camp 和 Jacob[1]借助于多普勒听诊器测量使外周脉搏消失所需的压力，并以此确定使用止血带所需压力。
The exact pressure to which the tourniquet should be inflated has not been determined. Eidence indicates that pressures greater than necessary hae been used for many years. The correct pressure depends somewhat on the age of the patient, the blood pressure, and the size of the extremity. Reid, Camp, and Jacob[1] used pneumatic tourniquet pressures determined by the pressure required to obliterate the peripheral pulse using a Doppler stethoscope; they then added 50 to 75 mm Hg to allow for collateral circulation and blood pressure changes.
止血带加压所需的精确压力尚未确定，有证据表明许多年来我们所使用的压力偏大，真正需要的正确压力在某种程度上要根据患者年龄、血压以及肢体的周径来确定，Reid、Camp 和 Jacob[1]借助于多普勒听诊器测量使外周脉搏消失所需的压力，并以此确定使用止血带所需压力。
Each other's technology to the market as a guide, firmly grasp the pulse of the market, the timely launch operators, distributors and users demand for the product, the company every year since the establishment of the sales climbing, and continuously expand the size of the market, AUP in a number of countries and Set up a representative office and technical service centres.
互讯科技以市场为导向，紧紧把握市场脉搏，适时推出符合运营商、经销商和用户需求的产品，公司自成立以来销售额逐年攀登，人员和市场规模不断扩大，AUP在多个国家和地区设立了代表处和技术服务中心。
In this study, electric current density, grid size, pulse frequency and abraser content were used as inputting parameters, and roughness of surface as outputting parameter, meanwhile, the technology model of power-mixed pulse electrochemical polishing was established by using the technology of BP neural network.
研究混粉脉冲电化学抛光的机理，以电流密度、磨料粒度、脉冲频率和磨料含量为输入参数，以表面粗糙度为输出参数，利用神经网络技术建立混粉脉冲电化学抛光工艺模型。
The spot patterns of the backward scattering light does not change with the pumping light spot, but its size is enlarged with the increase of the focal length of the lens. There exists maximum for the pulse width and the energy of the scattering light, which rise and then fall, with the rise of the gas pressure of the medium. The energy reflectivity is 1%～3%, and there exists pulse width compression effect for the backward scattering light, related with gas pressure of the medium.
任意改变抽运光的光斑形状均不影响后向散射光的光斑形状，随透镜焦距的增加散射光光斑口径增大；散射光的脉冲宽度和能量大小随介质气压的升高先升后降，存在极值现象；能量反射率为1％～3%；后向散射光脉宽具有脉宽压缩特性，且与介质气压有关；用聚焦透镜和介质池取代激光器的后镜，可自动成腔输出激光。
The numerical results denoted: in a cylindrical shell, the typical ultrasonic guided wave is Lamb wave like in a thin plate and the S0 mode is the fastest transmitting and less dispersion of guided waves; the main features of the surface waves in a thick hollow cylinder are three kinds of waves-- the surface skimming longitudinal wave, head wave and the Rayleigh wave, the first Rayleigh pulse`s polarity changes gradually with the propagating angle increment, and reverses one time from 0o to180o; if neglected the diffraction effects and only considered the dispersion effect, the polarity of the first Rayleigh pulse is only determined by the angle between the source and the detection point, and not related to the size of the specimen.
数值模拟结果表明：薄圆管中的激光超声导波是典型的类似于薄板中类Lamb波，且其中S0模式是传播速度最快且频散较小的导波；厚圆管表面声波中显著的波为掠面纵波、头波和瑞利波，第一个瑞利波脉冲的极性在传播过程中发生了倒转现象，瑞利波沿圆周向传播时180o范围内瑞利波脉冲正好倒转了一次；忽略衍射效果，只考虑色散效应时，圆管中第一个瑞利波脉冲的极性和试样的尺寸无关，仅和探测点离波源的角度相关。
Thus the pulse parameters were determined based on examination of the microstructure, grain size, hardness and tensile strength of the deposits obtained at different average current densities with constant pulse-on time (ton =2 ms) and pulse-off time (toff= 45 ms).
结果表明，在恒定脉冲模式下(脉冲导通时间2ms，脉冲断开时间45ms)，镀层晶粒尺寸随电流密度的上升而明显下降，硬度与强度则显著上升，当电流密度超过8A/dm2时，抗拉强度开始急剧下降而硬度保持6kN/mm2的高位基本不变，当超过12A/dm2时，硬度也开始下降。
Especially, PCSS's can be excited by lower energy laser pulse and have high-gain output, so it is possible to make the all-solid state mini-size high power ultra-wide-band electromagnetic pulse emitter system.
而且光电导开关具有可以用较低能量的光脉冲激励和具有高增益特性的优点，从而使制成全固态化的微型高功率超宽带微波脉冲产生器系统成为可能。
Using engines for the K-0-SPT plasma engine, as shown in Figure 1: K0 - SPT to 200W small pulse state power plasma source for the equipment in orbit correction and attitude to maintain, with the following parameters: size outer EF = 85 mm and 43 mm long.
实验采用发动机为K-0 SPT型等离子体发动机，如图1所示：K0-SPT为200W脉冲态下小功率等离子体源，用于仪器在轨的校正和姿态保持，具有下列参数：外廓尺寸Ф=85 mm，长43 mm。
To decrease the size of electromagnetic riveter, the author proposes that pulse capacitor should be replaced with electrolytic capacitor, the existing high voltage ignitron should be replaced with thyristor. The low voltage riveting process has been studied experimentally.
根据国内现有条件提出采用电解电容器代替原有设备的脉冲电容器、以电子开关代替真空接触器，实现电磁铆接设备的小型化；低压铆接实验表明改善线圈的散热性能是低压电磁铆接必须解决的一项关键技术。
Nanostructured ZnO films with grain size of 28～35 nm have been prepared on quartz glass substrates by pulse laser ablation of Zn target in oxygen atmosphere. The structural and optical properties of the films were studied. ZnO thin films with typical c-axis (002) orientation were successfully deposited at a range of 100～250 ℃. The results obtained by X-ray diffraction and photoluminescence measurements show that the strong UV emission centering is about 378～385 nm and deep-level emission centering about 518～558 nm in the room temperature PL spectra of the ZnO films.
利用脉冲激光沉积法在氧气氛中烧蚀锌靶制备了纳米晶氧化锌薄膜，衬底为石英玻璃，晶粒尺寸约为28～35 nm.X射线衍射结果和光致发光光谱的测量表明，当衬底温度在100～250 ℃范围内时，所获得的ZnO薄膜具有c轴的择优取向，所有样品的强紫外发射中心均在378～385 nm范围内，深能级发射中心约518～558 nm，衬底温度为200 ℃时，得到了单一的紫外光发射。
Four 8-bit I/O Ports C Three 16-bit Timer/Counters C 256 Bytes Scratch Pad RAM C 8 Interrupt Sources with 4 Priority Levels C Dual Data Pointer Variable Length MOVX for Slow RAM/Peripherals High-speed Architecture C 10 to 40 MHz in Standard Mode 16K/32K Bytes On-Chip ROM Program T80C51RD2 ROMless Versions On-Chip 1024 bytes Expanded RAM C Software Selectable Size (0, 256, 512, 768, 1024 bytes) C 256 Bytes Selected at Reset for AT87C51RB2/RC2 Compatibility Keyboard Interrupt Interface on Port P18-bit Clock Prescaler 64K Program and Data Memory Spaces Improved X2 Mode with Independant Selection for CPU and Each Peripheral Programmable Counter Array 5 Channels with: C High-speed Output C Compare/Capture C Pulse Width Modulator C Watchdog Timer Capabilities Asynchronous Port Reset Full Duplex Enhanced UART Dedicated Baud Rate Generator for UART Low EMI Hardware Watchdog Timer (One-time Enabled with Reset-out) Power Control Modes C Idle Mode C Power-down Mode C Power-off Flag Power Supply: 2.7V to 5.5V or 2.7V to 3.6V Temperature Ranges: Commercial (0 to +70C) and Industrial (-40C to +85C) Packages: PDIL40, PLCC44, VQFP44
四8位I/O端口C款三16位定时器/计数器 256字节RAM的便笺簿 8中断源4优先级和C双数据指针MOVX在缓变长内存/外设高速架构为C 10至40 MHz的标准模式16K/32K字节的片上ROM程序T80C51RD2无ROM版本片1024字节扩展RAMC软件可选尺寸（0，256，512，768，1024字节）C选取在重置为AT87C51RB2/RC2兼容键盘中断接口与独立的选择港口小一8位时钟分频器64K的程序和数据存储器空间的改进X2模式的CPU和256字节每个外设可编程计数器5通道的阵列：C型高速输出C比较/脉宽调制器捕获看门狗定时器复位功能异步端口全双工增强型UART的波特率发生器的UART低EMI硬件看门狗定时器电源控制模式空闲模式C掉电模式C断电旗电源：2.7V至5.5V或2.7V至3.6V温度范围：商业（0到+70 C）和工业（- 40C至+85℃）封装：PDIL40，PLCC44，VQFP44
This paper derived the formula of strip air-core pulse transformer's inductance. According to the size of the transformer which was constructed successfully in our laboratory, the parameter is calculated by using MATLAB.
本文对带绕式空心脉冲变压器电感的计算进行了详细的理论推导，并根据已制作成功的变压器尺寸，用MATLAB编程进行电感的计算。
Experimental results show that the size of cluster and laser absorption efficiency are strongly dependent on several factors, such as the working pressure of pulse valve, atomic number Z of the gas.
实验结果表明，脉冲阀门的工作压力、所使用的气体种类等因素对团簇的尺寸及团簇对激光的吸收影响很大。