shift frequency

Under the same intensity, the threshold shift caused by noise increased with the frequency increased.

在相同的强度下，低频噪声引起的阈移小，高频噪声引起的阈移大。

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The results indicate that, under the thermal noise approximation, the measurement accuracy of Brillouin frequency shift is dependent on thermal noise, the derivative of the transmission function of the edge optical filter and the power of Brillouin scattering optical signal.

结果表明，在热噪声近似下，布里渊频移测量精度与热噪声、边缘光滤波器透射函数的导数及布里渊散射光信号功率有关。

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Traditionally the noncoherent frequency-shift-keying ( FSK) is more commonly used in FHSS systems due to its simplicity compared with the coherent phase-shift-keying ( PSK) scheme.

传统的非相干移频键控广泛应用于跳频扩频系统中，因为它相对于相干移相键控比较简单。

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For the exactly soluble case of unidirectional ring laser with a homogeneous broadened line, the frequency shift relation, the critical and threshold value of inversion, the phase transition behavior and the features of the two-photon lasers with injected signal are analysed.

就可以精确求解的均匀展宽、单向环形激光器的情形，分析了频率位移关系，反转度的临界值和阈值，相变行为，以及带有外加讯号的双光子激光的特性。

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Large fluid viscosity or low permeability ( High couple damping coefficient) make the shift to high frequencies of the main dispersion frequency range, and the attenuation coefficient knee points for the different frequency dependence, which represents the relaxation frequency movement to high frequencies.

高粘性流体和低骨架渗透率（高的固流耦合衰减系数）使得主要频散发生的频率范围，和衰减系数出现不同频率响应特征的鞍点向高频移动，这反映松弛频率向高频段移动。

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The development study of small automatic plotting system of radio shift frequency telegraph

无线移频报小型自动填图机的研制

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Bone conduction threshold shift at speech frequency was associated with the ages.

语频骨导听力损失程度随着患者年龄的增加而逐渐加重。

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All digital receiver of quadrature phase shift keying with large frequency shift correction

四相相移键控调制的抗大频偏的全数字接收机

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Raman soliton self-frequency shift ( SSFS) of ultrashort pulses propagating in a dispersion-decreasing fiber ( DDF) is studied in this paper.

研究了色散缓变光纤中超短光脉冲的Raman孤子自频移现象。

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Experimental cancellations and self-check separations of the major shift errors in four-frequency ring laser were reported, and the shift produced by multi-mode coupling was experimented and analysed.

本文介绍了对四频环形激光主要输出零漂误差进行的实验消除和自检分离，以及对多模耦合产生的零漂的实验研究和初步分析。

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A Primary Study of the Instability of the Threshold Voltage Shift of Native MOS Transistors Separation and Preliminary Analysis of the Shift Errors in Four-frequency Ring Laser

国产MOS场效应晶体管阈值电压不稳定性的初步探讨四频环形激光零漂误差的分离及研究

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