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频率
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  frequency
    Study on Frequency Resolved Optical Gating and LD-pumped Frequency-doubled Cr:LiSAF Laser
    频率分辨光学快门的理论研究和LD泵浦Cr:LiSAF蓝光激光器的研究
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    The Time Evolution and the Quantum Fluctuation for the Second-Order Nonlinear Optical Frequency Conversion System with Coupling of Two-Mode Quantum Field
    二阶非线性光学频率转换两模量子场耦合系统的时间演化与量子起伏
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    THE STUDY OF VIBRATIONAL FREQUENCY OF C = O BOND OF BENZOIC ACID
    苯甲酸C=O键的振动频率的研究
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    THE SERIES RESISTANCE AND CUTOFF FREQUENCY OF DOUBLE DIFFUSED PARAMETRIC DIODE
    双扩散参量二极管的串联电阻及截止频率
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    Gigahertz cutoff frequency capabilities of CdHgTe photovoltaic detectors at 10.6μ
    截止频率达千兆赫的10.6微米CdHgTe光伏探测器
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  “频率”译为未确定词的双语例句
    Study on Some Key Technology of High Average Power High Repetition Rate Tea CO_2 Lasers
    高平均功率高重复频率TEA CO_2激光器系统关键技术研究
短句来源
    A high repetition rate unstable Nd: YAG resonator
    高重复频率非稳腔Nd:YAG激光技术
短句来源
    A high repetition rate mode-locked Nd:YAG laser and analysis on its thermally stable resonator
    高重复频率Nd:YAG锁模激光器及其热稳腔分析
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    A heliumless long lifetime repetitive tunable TEA CO_2 laser
    无氦重复频率长寿命可调谐TEA CO_2激光器
短句来源
    A high repitition rate and mode-locked phosphate glass laser
    高重复频率磷玻璃锁模激光器
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  frequency
Frequency-Domain Bounds for Nonnegative, Unsharply Band-Limited Functions
      
In this paper we give a further investigation of the method introduced by the author in [1, Frequency-domain bounds for nonnegative unsharply band-limited functions] for proving bounds for functions with nonnegative Fourier transforms.
      
We present two-sided singular value estimates for a class of convolution-product operators related to time-frequency localization.
      
This paper presents an expansion for radial tempered distributions on ${\bf R}^n$ in terms of smooth, radial analyzing and synthesizing functions with space-frequency localization properties similar to standard wavelets.
      
The Balian-Low theorem (BLT) is a key result in time-frequency analysis, originally stated by Balian and, independently, by Low, as: If a Gabor system $\{e^{2\pi imbt} \, g(t-na)\}_{m,n \in \mbox{\bf Z}}$
      
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  frequecy
The frequecy distribution of insect damage to previously-damaged leaves was significantly different from that of the control leaves, and less leaf tissue was removed from those experimental leaves which did receive subsequent insect attack.
      
We have examined the qualitative scenario for the development of high- and low-frequecy oscillations in the regions of the first and second ignition limits, we have compared these against the results from numerical calculations and experimental data.
      
At suffinly hgh frequecy the individual rains chaotically jump up nd down oring a ga-like clud of ollding aticles.
      
For each image, compute a frequecy representation of how many times a member of a cluster of segments occurs in the image.
      
If any of the LEDs light up or flicker, change the frequecy of the receiver to a clear channel where no RF activity is indicated.
      
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The dielectrie constants of toluene, carbon bisulphide, normal pentane, normal hexane, ethyl ether and iso-amyl alcohol were measured by a capacity bridge using a specially constructed liquid condenser at both 30° and 75℃ (22.4℃ only for the last liquid), for frequencies of 600,1000 and 2000 cycles per sec. and under pressures from 1 up to 12,000 kg/cm2. For the first four liquids, the dielectric constant is practically independent of the frequencies

作者用一电容桥及一特制之液体蓄电器以量甲苯,二硫化碳,正戊烷,正己烷,乙醚,及异戊醇之比电容。所用温度为摄氏三十及七十五度(异戊醇之温度仅为二十二度四),频率为每秒六百,一千及二千周,压力自一气压高至一万二千气压。前四液之比电容几与所用频率无关。(ε-1)/(ε+2)·1/d,(ε-1)/d及(ε~(1/2))-1/d三式中以第一式最近一常数,然压力渐增第一式之值恒随之而渐减,至一万二千气压时(在甲苯为九千五百气压),其减少约数在甲苯及二硫化碳为百分之三,在乙醚为百分之八,在异戊醇为百分之十九,显随电矩之增加而增加,至其原因篇中亦略加说明。 篇中图表惠蒙同事朱福炘先生代为抄绘,附誌谢忱。

This is a brief report of the measurements by the method of critical penetration frequency of the maximum intensities of ionization in the ionospheric layers during the partial solar eclipse of June 19, 1936 at Shanghai. The results support the ultra-violet light theory of ionization in the F1 layer. For the E layer these results suggest that a considerable part of the ionization may be due to agents different from ultraviolet light.

本文报告公历一九三六年六月十九日在上海日偏蚀时用临界频率法测量天空电离层游离强度之变化就F_1层所显之结果而论,足为紫外线作用论强有力之一证惟按E层所显之结果则显出该层游离化之主因颇有一部分非紫外线之作用。

This paper presents a simple method by which the phase angle between the fundamental components of two non-sinusoidal waves can be measured. Applications of this method in an electron tube amplifier and oscillator arc discussed.

设有两个非正弦波,其基本频率相等,将此二波变为两电压,接至阴极射线示波器之两对偏转板极,则产生一复杂之李氏图形。此图形之总面积,与二波中基本频率之相角,有一极简单之关系。本文指出此种关系之存在,并引用於电子管放大器及振荡器中相角之测量。

 
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