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1·Furthermore, a ring CCO based frequency tuning scheme is proposed to reduce frequency variation.

设计了一种基于环形CCO的锁相环自动频率调谐结构来减小频率偏差。

2·Fully automatic frequency variation speed regulating NC die cutting production line control system;

全自动变频调速、数控冲切生产线控制系统；

3·Therefore, the frequency variation due to a factor other than the adsorption of the object is cancelled.

因此，由于探测对象物的吸附以外的原因引起的频率变化被抵消。

4·The improved algorithm can track frequency variation of the time-varying signal with no extra calculation burden.

对算法进行了改进，在不增加计算量的情况下，实现了对频率变化的跟踪。

5·PID control is used on the speed control by frequency variation and the temperature pressure control of the Chain gate machine-rotary kiln of the system.

本系统的回转窑直流调速、变频调速以及温度压力控制都采用了数字PID控制。

6·Digital filtering technique based on least square method multichannel sampling technique and frequency variation sampling technique were used experimentally.

实验应用了基于最小二乘法的数字滤波技术、多通道采样技术、变频率采样技术。

7·Digital filtering technique based on least square method, multichannel sampling technique and frequency variation sampling technique were used experimentally.

实验应用了基于最小二乘法的数字滤波技术、多通道采样技术、变频率采样技术。

8·Then the characteristics of frequency variation during the fatigue crack propagation process are simulated by three - dimensional dynamic finite element analysis.

并利用三维动态有限元模拟了点焊接头疲劳裂纹扩展过程中频率变化特性。

9·The paper studied the issue of low frequency in shallow parts of cross-hole seismic reflection sections using imaging principle and deduced frequency variation factor.

本文利用成像原理对井间地震反射剖面的浅部频率变低问题进行了研究，导出了频率变化因子。

10·In the solution of high frequency variation of ERP from VLBI observations, the direct solution mode with the consideration of the pole offsets is accordingly recommended.

为此，在基于VLBI资料解算erp高频变化时，建议采用直接求解模式，并考虑岁差章动模型偏差的影响。