大家在查：月相的变化自然季节立春雨水时法夕暮食限默冬罗雅谷徐昂调日法

二次差

n.second difference
网络Double difference

二次差

二次差

英-汉网络释义

二次差

Double difference

3.2.2 二次差（Double difference）......................... 17 3.2.3 三次差（Triple Difference）.........................

2

At first , gain the twi-difference image from the three consecutive video frames.

首先通过对连续三帧视频图像进行二次差分来得到二次差分图像；

4

Improvement of Quadric Difference Frequency Base on Multiple Frequencies CW Ranging Radar

多频连续波雷达二次差频测距法的改进

5

Study on Multiple Frequency CW Ranging Method Based Quadric Difference Frequency

基于二次差频的多频连续波测距方法研究

6

A New Ranging Method Based on Quadric Difference Frequency and the Analysis of Its Performance

二次差频测距新方法及其性能分析

7

CSO(Composite Second Order Beat)

复合二次差拍

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