如果说按照这个势头衰减下去,到2025年最后一根电话线就会被掐断。
If the decline of the landline continues at its current rate, the last cord will be cut sometime in 2025.
但是电力线信道上存在的各种噪声、衰减和多径传播等问题,这些都大大提高了通信的难度。
But the noises, the attenuation and the multipath propagation inhering in the powerline make it very difficult to realize such kind of communication system.
本文利用山东省及其邻区14个地震的37条等震线拟合山东地区地震烈度衰减公式。
The formula of seismic intensity attenuation fitted by using 37 isoseismal lines of 14 earthquakes in Shandong and near area.
两轴式卷线器的刹车具有两个主要目标、1规定线杯的最高速度低于路亚出线的速度,2控制速率的衰减,防止炒粉。
Brakes of casting reels has two major objectives, 1 to set the maximum spool speed and the lure speed just after line released, and 2 to control the decelerate rate to prevent birds nest.
提出了一种利用爆轰波垂直入射时水中冲击波的衰减曲线计算凝聚炸药爆轰波剖面的特征线方法。
This paper presents a method of characteristics to calculate the structure of the detonation wave in condensed explosive by the decay shock curve data obtained in the aquarium test.
它不仅能衰减沿电源线传导的EMI能量,同时也对EMI的辐射有显著的抑制作用。
Not only it provides attenuation of EMI energy conducted in power line, but also contributes significantly to the control of radiated EMI.
文中分析了电力线信道的阻抗、噪声、衰减特性,据此给出了电力线信道模型,有助于深入理解低压电力线通信的特点。
This paper analyzes the impedance, noise and attenuation characteristics of PLC channel and introduces the PLC channel model which will help us understand PLC further.
多股线比实心线更常见,并且更灵活,但是实心线的衰减更小。
Stranded wire is more common than solid wire and is more flexible, but solid wire has less attenuation.
本文首先分析了低压电力线网络的特点及信道特性,对电力线信道的噪声和复衰减特性分别进行了测量及分析。
Through this paper, the low-voltage power line network and channel characteristics are researched. The noise and attenuation characteristics of power line channel are measured and analyzed.
利用配有电压自动衰减电路的铁电材料测试系统测量了PZT铁电体材料样品的电滞回线。
The PZT ferroelectric slice sample was measured by the system with the automatic voltage-decaying circuit, and hysteresis loops of the sample was exhibited.
这种方法在对角线方向上的频率响应特性较好,而在水平和垂直方向上对基带外的垂直频谱衰减不够,导致放大图像中的方块效应。
But there is Mosaic impact in the enlarged picture because this method can't adequately attenuate the vertical frequency off the Base Band in the horizontal and vertical direction.
如果没有衰减线将是平的。
首先,介绍了电力线通信,测量并分析了电力线信道的噪声和复衰减特性,并分别进行了建模。
First, power line Communication is introduced. The noise and attenuation characteristics of power line channel are measured and modeled.
文中对地面运动衰减规律中的距离参数提出了一种新的定义,即从场地到破裂线两端点的平均距离。这个定义能较好地反映发生构造地震的断层破裂模式。
A new definition of distance parameter in attenuation law of ground motion, i. e. the average distance from site to both ends of rupture line is proposed.
首先,介绍了电力线通信(plc),测量并分析了电力线信道的噪声和复衰减特性,并分别进行了建模。
First, power line Communication (PLC) is introduced. The noise and attenuation characteristics of power line channel are measured and modeled.
借助于电离流时间衰减曲线,测量得出了上述三条谱线对应的振动能级的动力学参数。
With the measurement of ion current decay curves of the three features, dynamic parameters of them were obtained.
目前,标准的HDMI线即使长达49米,其信号也不会有任何的衰减,所以就去看看那些最便宜的吧,连到你的设备上,去享受吧。
Standard HDMI cables today can be up to 49' long without any signal loss, so just look for the cheapest cable, plug in your equipment, and enjoy.
电力线通信存在随机高斯噪声干扰、多径效应和信道衰减,严重制约了高速数据的传输。
There are stochastic Gaussian noise, multi-path effect and attenuation in the power line communication. It is difficult to transmit high-speed streams.
在频域抗干扰中提出了一种简化的干扰门限估计算法和干扰谱线线性衰减算法,进一步简化了这些算法的实现复杂度。
I filter in time-domain, 2 a simplified algorithm for estimating threshold between interference and others, and a method of attenuating the interference magnitude linearly in frequency-domain.
在频域抗干扰中提出了一种简化的干扰门限估计算法和干扰谱线线性衰减算法,进一步简化了这些算法的实现复杂度。
I filter in time-domain, 2 a simplified algorithm for estimating threshold between interference and others, and a method of attenuating the interference magnitude linearly in frequency-domain.
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