1) cut-off slope
截止斜率
2) Slope cut-off negative feedback
斜率截止负反馈
3) Cut-off frequency
截止频率
1.
Study on cut-off frequency of abnormity wave-guide;
异型波导截止频率的研究
2.
Effect of Co ions substitute on the cut-off frequency of NiZn ferrites;
Co~(2+)取代对NiZn铁氧体材料截止频率f_r的影响
3.
Optimization design of excitation sources and samples position in computing cut-off frequency of waveguides by 2D-FDTD method;
2D-FDTD法计算波导截止频率的激励源设计与取样
4) cut off frequency
截止频率
1.
The results show that one part of residual wavefront phase error changes with cut off frequency proportionally and another part inversely, so it becomes possible to find an optimal frequency which makes the systematic residual wavefront error minimal.
分别导出了时间响应误差和波面探测误差与截止频率之间的数学表达式， 表明剩余波差随截止频率的变化规律既有反方向部分， 又有正方向部分， 从而可以找到一个最优频率， 使得系统剩余波差最小。
5) cutoff rate
截止率
1.
The cutoff rate expressions are derived and then the performances of different DTTB systems under AWGN channel and multi-path channel conditions are compared with computer simulations.
介绍了数字电视地面传输(DTTB)标准中抗多径的方法以及ADTB-T系统在抗多径技术上的改进,通过截止率计算公式,仿真并比较了各系统的抗多径衰落的性能。
2.
The article gives the cutoff rates of the existing five Digital TV Terrestrial Broadcasting systems (ATSC,DVB,ISDB,ADTB-T and DMB-T) under AWGN channel and multi-path channel conditions, and then compares their performance and puts forward the results.
针对现有5种数字电视地面广播系统(ATSC,DVB,ISDB,ADTB-T,DMB-T),给出了AWGN信道和多径衰落信道下各系统的截止率性能,并进行了比较。
3.
Based on single carrier and multicarrier these two different transmission modes,the cutoff rate expressions and the outage probability expressions of the DTTB transmission systems are derived.
本文分析了数字电视地面广播通信信道具有长脉冲响应的多径衰落的特点 ,从频域上表达了其多径衰落信道模型 ;基于单载波和多载波两种不同的传输模式 ,推导了数字电视地面广播传输系统在该多径衰落信道下的系统截止率和中断概率的表达式 ;比较了基于不同数字电视地面广播传输标准和解决方案的传输系统在数字电视地面广播多径衰落信道下的系统输出的截止率和中断概率的性
6) cutoff frequency
截止频率
1.
Mechanism of cutoff frequency of resonator tube in thermoacoustic engine;
热声热机谐振管截止频率选择机理
2.
Study on the influence to the cutoff frequency of semicircle-tunnel from the train;
列车对半圆拱形隧道中电磁波截止频率的影响
3.
Effects of the metallic pit prop on the electromagnetic wave cutoff frequency in the rectangular tunnel;
矩形隧道中的金属支护立柱对电磁波截止频率的影响
补充资料：负反馈
分子式：
CAS号：
性质： 当反馈信号与输入信号相反，即反馈结果抵消输入信号作用时叫负反馈。工程控制中主要采用负反馈。负反馈有降低干扰，增加稳定的效果。
CAS号：
性质： 当反馈信号与输入信号相反，即反馈结果抵消输入信号作用时叫负反馈。工程控制中主要采用负反馈。负反馈有降低干扰，增加稳定的效果。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条