QRD怎么读

The differences of the acoustic diffusion when terraces, QRD and absorptive material of distinct parameters are employed on the ground, the ceiling and the rear wall respectively are discussed.

讨论了在地板、天花板和后墙分别安装阶梯以及不同参数的二次余数扩散体和吸声材料时，声场扩散性的改变。

The Highest Level of Chinese Non-recovery Coking Technique& Introduction of the QRD Anthracite Clear-type Thermal-recovery Stamping Mechanical Coke Oven

中国无回收炼焦技术最高水平&QRD无烟煤清洁型热回收捣固式机焦炉介绍

Quadratic residue sequence diffuser ( QRD) is a very widely used sound diffusion structure, as for its simple structure, convenient proliferation and excellent diffusion performance.

二次剩余序列扩散板是一种应用非常广泛的声扩散结构，其结构简单、制造方便并且扩散性能优良。