液相环境下振荡的压电石英晶体传感器的谐振频率变化主要受液体性质和表面质量负载的影响。
The resonance frequency shifts of piezoelectric quartz crystal sensors in contact with the liquid are influenced mainly by liquid properties and mass loading on the quartz crystal surface.
如果能适时地引入梯形电路的简单介绍，则rc移相式振荡电路的振荡频率及振荡条件可以容易地求出。
If we introduce the ladder-shaped circuit simple in good time, the oscillating frequency and oscillating condition of rc phase shift oscillating can be w.
如果能适时地引入梯形电路的简单介绍，则rc移相式振荡电路的振荡频率及振荡条件可以容易地求出。
If we introduce the ladder-shaped circuit simple in good time, the oscillating frequency and oscillating condition of rc phase shift oscillating can be worked out easily.
给出了全相参雷达频率源的中频相干振荡源及时钟频率之间的最佳频率关系。
Best frequency relation is given between IF coherent oscillating source and clock frequency of full coherent radar.
提出了一种基于综合相量幅值和相位变化规律实时测量电力系统振荡中振荡频率及瞬时频率的算法，利用三相电流经相应变换获得综合相量。
An algorithm based on the magnitude and phase Angle of the generalized phasor to measure instantaneous frequency and swing frequency while the power swing occurred is presented.
提出了一种基于综合相量幅值和相位变化规律实时测量电力系统振荡中振荡频率及瞬时频率的算法，利用三相电流经相应变换获得综合相量。
An algorithm based on the magnitude and phase Angle of the generalized phasor to measure instantaneous frequency and swing frequency while the power swing occurred is presented.
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