1)  prefilter
预滤
1.
In this paper,we introduce the conception of tower extension of filter and study its relationship with the saturated prefilter in the sense of category.
引入了滤子的塔扩张这一概念,并且讨论了它与饱和预滤在范畴意义下的关系。
2)  prefiltering
预滤波
1.
A Novel Method Based on Prefiltering for Super-Resolution in Radar Range;
一种基于预滤波降噪处理的雷达距离超分辨新方法
2.
Prefiltering of Multiwavelet with 2-order Banlancing;
多小波二阶平衡的预滤波处理
3.
In this paper,we develop a jitter-free all digital Timing Recovery Scheme with fast tracking capability based on Gardner timing error detector(TED),prefiltering,Kalman filtering and first-order zero-crossing digital phase-locked loop(ZC-DPLL) for high speed QAM signal over High Frequency(HF) channel.
文章基于Gardner定时误差检测算法、预滤波和一阶过零检测锁相环理论,结合卡尔曼滤波算法,设计了一种快速无抖动的短波高速QAM信号全数字解调码元同步方案,从理论上推导了方案中各个参数的设置方法,并在不同的信道环境下测试算法的性能,仿真结果显示该方案具有优良的性能。
3)  pre-coat
预滤膜
1.
Abstract In the paper the structure,operation principle,characters of the candle filter and its pre-coat film(diatomite)are introduced.
介绍了烛式过滤机的结构、操作原理、特性和在滤管表面涂敷的预滤膜--硅藻土。
4)  Pre-filter
预滤波器
1.
Pre-filter Design for WLAN Receivers with Packet Binary Convolutional Coding (PBCC) Transmission;
基于PBCC传输的WLAN接收机预滤波器设计
2.
Since it s difficult to get the time-domain expression of TFM pre-filter by mathematic methods,IFFT for the frequencyain response in Matlab is proposed to obtain time-domain expression.
由于TFM预滤波器的时域表达式很难从数学上推导出来,提出了一种在Matlab中对其频域响应进行IFFT变换的方法。
5)  prefilter
预滤波
1.
A class of approximation-order prefilter method for multiwavelets;
基于逼近阶的向量小波预滤波方法
2.
A technique for compressing synthetic aperture radar(SAR) image data using multiwavelet transform and prefilter methods is considered.
实验结果表明,在改进现有的基于小波变换的多级树集合分裂(SPIHT)编码算法的基础上,选用适当的多小波基及预滤波方法,能够得到与小波变换相当甚至略优于小波变换的编码性能。
3.
For common biorthogonal multi-wavelets system,a simple definition of balancing of order is proposed,and the prefilter theory is introduced to biorthogonal multi-filter banks.
对一般的双正交多小波系统,给出了阶平衡的较为简单的定义,并将预滤波理论引入双正交多小波滤波器组。
6)  pre-filtering
预滤波
1.
Space-time two-dimensional pre-filtering for clutter suppression in the phased array airborne radar;
相控阵机载雷达空时两维杂波预滤波处理方法
2.
The paper carried out the discussion on influence of four common-used processing modules (seismic wavelet phase minimization, pre-filtering, prestack deconvolution and poststack seismic wavelet zero-phasing) on phase character of seismic wavelet.
本文就实际地震数据处理中常用的地震子波最小相位化、预滤波、叠前反褶积和叠后地震子波零相位化等四个处理模块对地震子波相位特性的影响进行了探讨。
参考词条
补充资料:多层滤料滤池
分子式:
CAS号:

性质:一种下流式重力深床滤池。一般采用3种滤料,上层为无烟煤(粒径1~2mm),中层为砂(粒径0.4~0.8mm),底层为石榴石(粒径<0.5mm)。过滤速度为10m/h,反冲强度为48~72m/h。在对生物处理后的出水进行过滤时,需采取某种形式的辅助冲洗措施。

说明:补充资料仅用于学习参考,请勿用于其它任何用途。