When the Query By Example variant is used, they are provided for the QBE as well.
一般会为 QPD 信息段提供输入参数规范，输入字段描述与注释。
After analyzing the principle and difficulties of analog QPD receiver, the article introduces the principle of digital QFD, oversampling and IF-sampling, and the implement of digital receiver on MSL-400 spectrometer.
本文在分析模拟正交检波原理与不足的基础上，介绍了数字正交检波、过采样和采用中频直接采样的原理，及在400MHz核磁谱仪上的实现方案。
The essence of the traditional photoelectric autocollimator based on QPD is by detecting the location of the light intensity center of gravity to achieve the angle measurement.
传统的四象限光电自准直测量系统，其实质是通过检测聚焦点光斑光强重心的位置而实现角度测量的。
After analyzing the principle and difficulties of analog QPD receiver, the article introduces the principle of digital QFD, oversampling and IF sampling, and the implement of digital receiver on MSL 400 spectrometer.
本文在分析模拟正交检波原理与不足的基础上，介绍了数字正交检波、过采样和采用中频直接采样的原理，及在400MHz核磁谱仪上的实现方案。