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截止
相关语句
  cutoff
    Measurement of Cutoff Wavelength for double Clad Monomode Fiber—the Modified Polarization Method
    双包层单模光纤截止波长测量——改进的偏振法
短句来源
    Measurement of Cutoff Wavelength for double Clad Monomode Fiber——the Modified Polarization Method
    双包层单模光纤截止波长测量——改进的偏振法
短句来源
    The Calculation of the Higher Order Modes Cutoff Wavelength in TEM Cells with TLM Method
    用TLM方法计算TEM小室高次模的截止波长
短句来源
    Calculations of Cutoff Values of Nonlinear TE Waves for a Symmetric SlAb Optical Waveguide
    对称平板光波导非线性TE波截止值的计算
短句来源
    Development of High Cutoff Frequency HBT
    高截止频率异质结双极晶体管的研制
短句来源
更多       
  cut-off
    Accurate Computation of the Normalized Cut-off Frequency of the LP_(11) Mode in an Optical Fiber Haying Arbitrary Refractive Index Profile
    任意折射率剖面光纤LP_(11)模归一化截止频率的精确计算
短句来源
    DISTRIBUTION OF THE COMPOSITION AND THE CUT-OFF WAVELENGTH OF HgCdTe WAFER DETERMINED BY FOURIER TRANSFORM INFRARED MICROSCOPY
    傅里叶红外显微光谱技术测量HgCdTe晶片组分分布与截止波长分布
短句来源
    Under liquid nitrogen temperature, the cut-off wavelengths of the two bands are 3.04μm and5.74μm individually, with comparatively high peak detectivity.
    在液氮温度下,两个波段光电二极管的截止波长分别为3.04μm和5.74μm,并有较理想的黑体探测率。
    The numerical method based on the finite difference method in time domain is applied to calculate the five eigenfunctions of the Open cavity within aperiod(t=0, T/4, 2T/4, 3T/4, 4T/4). The eigenfunction is divided into four areas: the cut-off area、 the standing wave area、the transition area and the traveling wave area.
    用时域有限差分法计算了不同的径向位置在t=0,T/4,2T/4,3T/4,4T/4等时刻的径向电场Er随纵向距离z的变化,并根据计算结果将开放腔中的场从左到右分成四个区:截止区,驻波区, 过渡区和行波区。
    Cut-off Frequency Variable Linear Phase FIR Filter
    截止频率可变的线性相位FIR滤波器设计
短句来源
更多       
  cut off
    Measurement of Cutoff Wavelength for double Clad Monomode Fiber—the Modified Polarization Method
    双包层单模光纤截止波长测量——改进的偏振法
短句来源
    Measurement of Cutoff Wavelength for double Clad Monomode Fiber——the Modified Polarization Method
    双包层单模光纤截止波长测量——改进的偏振法
短句来源
    The Calculation of the Higher Order Modes Cutoff Wavelength in TEM Cells with TLM Method
    用TLM方法计算TEM小室高次模的截止波长
短句来源
    Calculations of Cutoff Values of Nonlinear TE Waves for a Symmetric SlAb Optical Waveguide
    对称平板光波导非线性TE波截止值的计算
短句来源
    Development of High Cutoff Frequency HBT
    高截止频率异质结双极晶体管的研制
短句来源
更多       
  “截止”译为未确定词的双语例句
    MEASUREMENT OF THE UNIFORMITY OF TRANSVERSE COMPOSITION OF Hg_(1-x)Cd_xTe WITH LIGHT-CUT-OFF METHOD
    用光截止法测量Hg_(1-x)Cd_xTe的横向组分均匀性
短句来源
    CdSe Thin-Film Transistors with Low off-Current and anodized Ta_2O_5 Gate Oxide in a 12288-Pel LC Display
    用于12288象素液晶显示器的CdSeTFT(低截止电流、阳极化 Ta_2O_5栅极氧化物)
短句来源
    On and Off Characteristics of CMOS Analog Switches
    CMOS模拟开关的导通与截止特性
短句来源
    The characteristic parameter of the 0.25μm GaAs PHEMT is gm=440 ms/mm,fT=50GHz and fmax>80 GHz. All of these results show that the device has good DC and AC small-signal characteristic.
    流片得到的0.25μm GaAs PHEMT器件的性能参数为:跨导gm=440mS/mm、截止频率fT=50GHz、最大振荡频率fmax>80GHz,显示出良好的DC和AC小信号特性。
短句来源
    Simulation results show that the mixer can operate properly at 2.4 GHz frequency with a single power supply of 0.8 V,and it achieves a conversion gain of-8.5 dB with 3rd-order input intercept point(IIP3) at 28.4 dB.
    结果显示,该混频器在0.8 V单电源电压下,仍可以对2.4 GHz的正弦信号进行混频,转换增益为-8.5 dB,三阶输入截止点的值为28.4 dB。
短句来源
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  cutoff
Let Γ be a smooth compact convex planar curve with arc length dm and let dσ=ψ dm where ψ is a cutoff function.
      
The short-wave cutoff boundary of the capillary wave spectrum is established.
      
Thus, as the particle concentration increases, the central jump in compression [shock wave] moves in the direction of the nozzle cutoff, while the Mach number on the axis of the jet in front of the forward jump diminishes.
      
The results of an experimental study of a flow of rarefied gas of density ~10-5 g/cm3 beyond the cutoff of a hypersonic nozzle (M?11) by means of an electron beam with energy up to 43 keV are presented.
      
A study is made of the propagation of three-dimensional acoustic perturbations in a two-dimensional gas flow in axisymmetric channels of variable cross sectional area at frequencies near the cutoff frequency.
      
更多          
  cut-off
The results show that the 95% cut-off point for TC was 220 mg/dL, while for TG, it was 160 mg/dL.) increased significantly (P >amp;lt; 0.05).
      
PM was collected with a 13-stagelow pressure impactor (LPI) having an aerodynamic cut-off diameter ranging from 10.0 μm to 0.03 μm for a size-segregated collection.
      
The two cut-off points of these three stages are the preconsolidation stress and the structural yielding stress of the original clay, which could be determined by shear wave velocity measurement.
      
The proton energies of the population are below the low energy cut-off of the main dispersed proton population of the magnetosheath origin, and its intensity and density are also much lower.
      
The effect of the cut-off radius of the interparticle potential on the process of phase transformation is analyzed, and the position of spinodal of superheated liquid and supersaturated vapor is estimated.
      
更多          
  cut off
Stabilograms of the body's general center of gravity (GCOG) were recorded for 15 s, including 6 s of silence, auditory stimulation (1.6, 3.2, or 4.8 s), and silence after the signal was cut off.
      
When the equilibrium was upset as a result of a change in plant weight, the movement of the beam's shutter cut off the flow of light incident on the photoelectric cell.
      
After 1, 2, 3, or 4 days, the treated leaves were cut off and mechanically infected with the potato virus X (PVX).
      
All leaves of young plants were cut off except the 4th, 5th, 6th, 7th, and 8th leaves.
      
We show that the threshold of the reaction under consideration tends to decrease with increasing z; the energy spectra of γ-ray sources at energies of ~10 TeV must be cut off in accordance with the calculated z dependence.
      
更多          


~~

在电力线路上使用的载波频带中,除带滤波器式宽频带阻波器中电感的分布电容必须加以考虑,在设计时,L_1的分布电容可以并入并联的电容C_1中,而表示L_2的分布电容的自然谐振频率f0成为设计参数之一。为了保证在给定截止频率f2′和f_1′范围内输入阻抗大于KR,采用了和f2′与f1′稍有差别的设计用的截止频率f2和f1,按照f2和f1进行设计,就可使在f2′和f1′时的输入阻抗电阻部分等于R。f2—f1比f2′—f1大些。这两个频率可以从给定的f2′、f1′、f0′和电感电容的功率因数中求出。f0一般可以采用在1.5f2′和2f2′间的数值为宜,大于2f2′的f0会使扼阻频带中的颠值阻抗降抵,小于1.5f2′f的f0会使扼阻频带外的输入阻抗降低得太快。末端电阻KR中的K以采用1和0.95间的数值为宜,如果K小于0.95,扼阻频率带中的最低阻抗KR变得太小;如果K大于1,在给定的f2′—f1′情况下所需频宽f2 f1变得大些,这就提高强流线圈的电感L_1,使所需采用的有色金属多些。

Detailed calculations and measurements on u.h.f. characteristics of amplifying tubes show that the effective input capacitance of a tube increases with the operating frequency when it is approaching the natural resonant frequency of the input circuit of the tube. Due to this effect, the actual cut-off frequency of a wide-band distributed amplifier becomes lower than that originally designed. This effect becomes more serious as the bandwidth of the amplifier increases. In this paper, a new kind of distributed...

Detailed calculations and measurements on u.h.f. characteristics of amplifying tubes show that the effective input capacitance of a tube increases with the operating frequency when it is approaching the natural resonant frequency of the input circuit of the tube. Due to this effect, the actual cut-off frequency of a wide-band distributed amplifier becomes lower than that originally designed. This effect becomes more serious as the bandwidth of the amplifier increases. In this paper, a new kind of distributed amplifier utilizing mm'-derived low-pass networks as grid and plate lines is described and its characteristics is analyzed. Since the mm' low pass networks can absorb more parasitic parameters of the tube, the actual and designed cut-off frequencies may agree with each other. Experimental models of amplifier stages with cut-off frequencies of 200 and 300 MHz have been built and results of measurements are given. By using this type of amplifier stage as the element of wide-band distributed amplifiers the design procedure may be considerably simplified.

对电子管超高频特性的详细计算和测量可证明,在工作频率较高而接近于输入电路的自然谐振频率时,管的有效输入电容随频率的增加而增加,这一效应使较宽通频带的分布放大器的实际截止频率低于原设计的截止频率,而且这一情况随设计频宽增加而愈益严重。本文提出一种新的利用mm′低通网络作为栅极和板极传输线的分布放大级。mm′网络可以较好地吸收电子管的杂散参数而使放大级实际的和设计的截止频率相符合。文中对这种放大级的特性进行了分析并给出截止频率为200和300MHz的分布放大级的实验结果。在制作较宽频带的分布放大器时应用mm′放大级可以简化设计手续。

The method of designing the slow-wave system for inductive coupled cavity chain which has been used in the high-power travelling-wave tube is described in detail. A slow-wave system of 30 KV electron beam voltage has been designed and constructed. The dispersion characteristic and the interaction impedance of the system has been measured. From the comparison of the measured values with the corresponding calculated values of the dispersion characteristic, it is noticed that the difference between the theoretical...

The method of designing the slow-wave system for inductive coupled cavity chain which has been used in the high-power travelling-wave tube is described in detail. A slow-wave system of 30 KV electron beam voltage has been designed and constructed. The dispersion characteristic and the interaction impedance of the system has been measured. From the comparison of the measured values with the corresponding calculated values of the dispersion characteristic, it is noticed that the difference between the theoretical value and its experimental result of the upper cut-off frequency is only about 0.6%, for the lower cut-off frequency about 2.8%.

本文提出了用于大功率行波管的电感偶含谐振腔链型慢波系统的设计方法,用此方法设计出了一套电子注电压为30千伏的慢波系统,对此系统进行了色散特性和偶合阻抗的测量。对色散特性进行了实验和理论比较。比较表明,计算的上截止频率和实测结果相差只有0.6%,下截止频率相差2.8%。

 
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