threshold frequency的例句大全

So, for example, we were talking about a threshold frequency as in a minimum frequency of light that you need in order to eject an electron from a metal surface.

举个例子来说，我们谈论的临界频率是，光从金属表面逐出一个电子，所需的最小频率。

The article introduces a kind of dual threshold frequency control circuit for digital control device.

文章介绍了一种数控装置的双门槛频率控制电路。

Electrons are ejected from the object only when the frequency of the radiation is greater than a certain minimum value, called the threshold frequency.

仅当辐射频率大于某一最小值即极限频率时，物体才会发射出电子。

A new multi-threshold frequency domain constant false alarm rate detection algorithm for radar fuse was presented.

提出了一种新的雷达引信多门限频域恒虚警率检测算法.

The Dual Threshold Frequency Control of Digital Control Device

数控装置的双门槛频率控制

It is found that both the parametric instabilities are able to generate a frequency upshifted sideband and the threshold field of the first instability is higher than that of the second one.

研究结果表明，这两种参量不稳定性都会产生一频率上移边带波，第一个不稳定性阈值比第二个要高。

First, the threshold filter and the signal correlation enhancement will be carried out to the high frequency data of wavelet transformation, it can not only denoise commendably, but also strengthen the point efficiently.

该算法首先将小波变换后的高频数据分量进行阈值滤波和信号增强处理，在很好地抑制噪声的同时，还能有效地增强突变点信息。

We can monitor many parameters and characteristics by measuring TEN, such as surge frequency, spectrum width, threshold current, mode jump and stability of output light power.

通过对激光的电噪声的测量可以监测激光器的诸多参数和特性，如弛豫频率，谱线宽度，阈值电流，模式跳变及输出光功率是否稳定等。

Influence of masking noise on hearing threshold and frequency discrimination in guinea pigs

掩蔽声对豚鼠听阈和频率辨别阈的影响

The de-noising process of the method was ( described). The effects of the size of correlation region, the hard and soft threshold, the frequency and S/ N of original signal, were discussed.

系统的描述了该方法的滤噪过程，讨论了相关运算区域大小、软硬阈值法、信号的频率、信噪比对滤噪结果的影响。

When the peak Stokes fluence exceed the damage threshold of frequency conversion crystals, the fatal damage on the crystals are the most serious.

TSRS效应不仅会造成泵浦光能量严重损失，使倍频效率大大降低，更严重的是，当TSRS产生的斯托克斯光的峰值能量密度大于频率转换晶体的破坏阈值时，将会造成频率转换晶体永久性破坏。

Experiments and Model Calculation of Soft Threshold for the Frequency Shifted Feedback Nd ∶ YLF Laser

频移反馈Nd∶YLF激光软阈值实验与模拟计算

The general expression of the threshold gain and frequency in the DFB lasers was deduced by using the coupled wave function.

利用耦合波方程，推导出分布反馈激光器自混合干涉频率及增益变化的表达式。

The theoretical models are given on the basis of gain threshold and lasing frequency by virture of double mirror-cavity model.

采用等效双镜腔模型，从增益阈值和振荡频率方面给出了理论模型。

This paper presents the basic operation principle and initial theory analysis of a threshold extension demodulator for the receiver of satellite television by means of the frequency and phase locked loop.

本文介绍一种采用锁频锁相环的卫星电视门限扩展解调器的基本工作原理和初步理论分析。

Mixed coding method of remote sensing image based on wavelet package decomposing is that threshold of low frequency and high frequency coefficients decomposed by wavelet package is classified into important and unimportant coefficients.

基于小波包分解的遥感图像混合编码方法，首先将小波包分解后的低频和高频小波系数域值化为重要系数和非重要系数。

The green light with a power of 11.3 mW and an efficiency of 2.3% was obtained. Laser threshold for self frequency doubling operation is measured to be 1 mW.

获得113mW的自倍频绿光输出，光光转换效率为23%，自倍频腔阈值为1mW。

The results show that if audition threshold curve corresponding frequency dot is above 15~ 20dB, the infrasound affects many humans' physiology functions.

结果表明，在次声听阈曲线上各对应频率点为15～20dB以上时，次声对人体的多项生理指标产生了影响。

In addition, speech hearing threshold and high frequency hearing threshold increased with the length of exposure to both heat and noise environment ( P < 0.01).

语频听阈和高频听阈随高温噪声暴露时间的延长而增高（P

Both speech hearing threshold and high frequency hearing threshold of the noise and heat group were obviously higher than those of the group with noise exposure only, and the difference was significant ( P < 0 01).

高温噪声组的语言听阈和高频听阈比噪声组明显增高，差异均有显著性（P