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1·Double frequency, double amplitude.

双频率、双振幅。

2·Double frequency wave distortion has been found in the experiment.

实验上观察到了倍频失真。

3·This double frequency distortion can be used to double frequency of incident signal.

这种倍频失真可用于对入射信号进行倍频。

4·Objective: To observe the effect of double frequency YAG laser in treating pterygium.

目的：观察倍频y AG激光治疗早期翼状胬肉的临床效果。

5·It can explain the double frequency chatter and the change of superior frequency in chattering process.

该规律能全面描述机床双频颤振现象和颤振过程主频带移动的原因。

6·This research will play instructive effect at improvement of crystal double frequency conversion efficiency.

所做的研究对提高晶体的倍频效率具有指导意义。

7·The range of double frequency is from 1 to 999. The double frequency number is selected directly by software.

该倍频器的倍频范围为1～999，倍频值可直接由软件选择；

8·So a method of 3d measurement technology based on virtual grating of double frequency was present in the paper.

为解决该问题提出了利用双频虚拟光栅投影的三维测量方法。

9·This paper presents a double frequency automated grid method, which applies more nodes in the stress concentration field.

本文提出了双频自动网格法，在应变集中区域增加节点。

10·The fraction frequency and double frequency scattering peaks exhibit similar scattering behaviour as the resonance scattering.

分频散射和倍频散射峰与共振散射峰具有相似的散射行为。