主要内容是基于线性直方图法测量模—数转换器性能的片上模拟锯齿波发生器的实现方法。
This paper is mainly about an analog saw-tooth signal generator used for linear histogram test of ADCs.
光纤。第1 - 45部分:测量方法和试验规程。模场直径。
Optical fibres - Part 1-45: measurement methods and test procedures - Mode field diameter.
如果不采取措施将叠加到信号上的串模噪声减到最小,串模噪声会对测量产生严重的影响。
Normal mode noise can seriously affect measurements unless steps are taken to minimize the amount added to the desired signal.
另外的原因是该电压没有用,是测量系统工作时所抑制的,而只响应差模电压。
In either case, that voltage is unwanted, and it is the job of the measurement SYSTEM to REJECT it, while responding to the differential-mode voltage.
强流电子束在过模波导中可能激励多种微波模式,测量微波模式对研究高功率微波产生的机理很有意义。
The high-current electron beam in the over-mode waveguide had driven the many kinds of microwave modes, it is very significant to study the high power microwave by measuring the microwave mode.
所以,建立起能够测量生物组织和等效体模介电参数的测量系统,就成了进行实验研军口旱匡大单刃士学位论文究的首要条件之一。
So it is one of the chief factors to set up measurement systems that can measure dielectric parameters of real tissues and equivalent phantom models, so as to carry through experimental studies.
文中也研究了系统中可能会影响频响特性测量的其他因素,如光源的边模抑制比、波长调谐速度等。
Side-mode suppression ratios and dynamic behavior of wavelength transients, which probably affect the measurement of frequency response, are also investigated.
由于考虑了辐射效应和高次模的影响,测量频率范围成功地扩展到了X波段。
By considering the influence of radiation effect and higher order modes, the measurement frequency range has successfully extended to X-band.
设计了一个测量放大器电路,它由差动放大电路、共模抑制电路、双端单端转换电路和程控增益放大电路组成。
A measurement amplifier circuit is designed, which consists of circuits of differential amplifier, a common-mode rejection, double-end and single-end conversions and programmed gain amplifier.
给出用光谱分辨的二次谐波自相关法测量输出脉冲的结果,证实在锁模脉冲中已发生频率调制。
The results of the spectrum-resolved SHG correlation measurements of the mode-locked pulses also are presented, which confirmed the presence of frequency chirping in the pulses.
测得的波导参数在测量误差范围内与用导模法测得的数据一致。
The measured parameters of the waveguide agreed with data measured by using guided mode method in measuring error ranges.
文中介绍了风洞的结构、性能、测量控制系统、自动数据采集和处理系统以及标模实验结果,分析了风洞的特点和用途。
Introduced are its construction, performance, measurement and control system, automatic data acquisition and processing system, test results of calibration model and analysis, features and USES.
介绍了2005年诺贝尔物理学奖的获奖工作-用锁模飞秒激光光梳去测量光的频率。
The work of the winners of the 2005 Nobel prize in physics is briefly reviewed. They measured the frequency of light with mode-locked laser comb.
共模电压抑制了每个相对测量系统地线输入端电压的允许波动范围。
The common-mode voltage range limits the allowable voltage swing on each input with respect to the measurement system ground.
利用共模抑制技术,提高了干涉系统的测量稳定性和重复性。
The measurement stability and repetitiveness of the laser interferometer is improved by means of convenient mode inhibiting technique.
分析与测量了抛光模与工件盘之间的抛光力,并对如何控制与测量进行了研究。
This paper deals with the analysis and measurement of applied foroes between polishing plate and work holder, and makes an investigation on how to control and measure the polishing force.
单模光纤模场直径有多种定义和测量的方法。
MFD of single mode fiber has several definitions and measurements.
个别病例应取面模,准确测量颧骨需要削除的骨量。
Individual cases should take surface mold accurate measurement to the bone mass.
由使用棱镜耦合器的一种新技术即漏模法,测量了平板玻璃光波导的参数(薄膜的折射率和厚度)。
The parameters of the optical slab glass waveguide (refractive index and thickness of thin film) were measured by a new technique for using the prism coupler, i. e., leaky mode method.
利用该仪器可以测量聚合物在稳态和动态挤出过程中的流动速率、压力降、离模膨胀和表观粘度等。
The flow rate, pressure drop, die swelling and apparent viscosity in dynamic and static extrusion can be measured by using this equipment.
在一定的条件下,该方法是可以对单纵模光纤激光器的输出线宽进行测量的。
Under certain conditions, this method can measure the output linewidth of single longitudinal mode fiber laser.
介绍了电站锅炉空气动力场的冷态模化的基本相似模化原理、试验控制参数的计算方法及相关的测量技术。
Present the basic similarity simulation principle followed in cold simulation of power plant boiler dynamic field, way of calculating test control parameters and associated measuring techniques.
这一工作对煤粉燃烧过程中辐射热交换的测量和数学模化都有重要的实际意义。
This work is of practical importance in measuring and modelling the radiative heat transfer in pulverised-coal-fired systems.
为研究两者之间的关系,在光纤不同弯曲直径下,对多模光纤激光器的输出性能进行了实验测量和理论计算。
To study the relationship, the output capability of multimode fiber laser is measured under various bending diameters, and it also be calculated theoretically.
介绍了作者在测量单纵模激光器线宽参数的过程中,研制的马赫-曾德尔光纤干涉仪,并给出了实验结果。
This paper introduces the development of fiber-optic Mach-Zehnder interferometer during measuring linewidth parameter of single-frequency lasers, and the experiment result has been given.
介绍两种快速测量单模光纤模场半径的方法及其测量装置——可变孔径法和移动圆孔法;
Two methods and devices which are changeable aperture and movable aperture for measuring the mode-field radius of single-mode optical fibers are presented.
分析观察测量失效的环模,磨料磨损是它的主要失效形式。
To analyze, observe and survey the expired circular mould, the abrasive wearing is its main expiration form.
利用光散射测量方法研究了短圆管挤出模头中聚合物熔体取向行为对螺杆轴向振动的响应。
The response of the polymer melt behavior of orientation for axial vibration of screw in short pipe extrusion die head was studied by the light scattering technology.
引入回音壁模式的“模场半径”概念,由“模场半径”计算出的模式间隔和实验测量值之间符合很好。
By introducing the parameter "mode field radius" of WGMs, the mode separations calculated by mode field radius agree well with the experimental resu.
引入回音壁模式的“模场半径”概念,由“模场半径”计算出的模式间隔和实验测量值之间符合很好。
By introducing the parameter "mode field radius" of WGMs, the mode separations calculated by mode field radius agree well with the experimental resu.
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