查询词典 Signal-to-Noise

The second type of digital signal is the pulse train, or rate, signal.

第二类数字信号是脉冲序列信号，或速率信号--速率。

Because you can split a 256-level QAM signal into a 16-level ASK (amplitude-shift-keying) signal for the in-phase component and a 16-level ASK for the quadrature component, a symmetrical approach is feasible.

因为将256级QAM信号分离成同相成分的16级ASK信号和求积成分的16级ASK，对称的方法是可行的。

Based on an analysis on the present situation and development of three kinds of signal systems (the point system based on interrogator responsor, the quasi moving block system based on digital track circuit and the moving block system based on wireless data transmission) in urban rail transit, some suggestions on the localization of signal system of urban rail transit are put forward.

在分析三种城市轨道交通信号系统制式(基于查询应答器的点式系统、基于数字轨道电路的准移动闭塞和基于无线数据传输的移动闭塞)的现状和发展基础上，对实现我国城市轨道交通信号系统国产化提出建议。

The radar signal being sent out is a simple radio signal, and can be received with a simple radio receiver.

发射出去的雷达信号是单个的雷达信号，也可以使用一个单个的雷达信号接收器。

Then, it established the testing system and achieved the experiment of collecting and simulating natural wind signal successfully. It validated the feasibility and reliability of the system through comparing the simulating signal and original one and offered the basis of control parameters and systemic feasibility for upper study.

而后建立测试系统，成功实现舒适性自然风信号的采样和还原模拟实验，通过对模拟自然风信号和原始信号各个特征参数的比较分析，验证了系统的可行性和可靠性，并为后期的研究提供参数控制和系统可行性依据。

The very low natural IRSL and GLSL signal levels of about 80-100 photo counts per second, corresponding equivalent dose of less than 1Gy, were presented for most modern samples, and imply that the IRSL and GLSL signal zeroing could be reached during deposition for most of loess and water-laid sediments in North China.

华北地区大多数现代沉积物细颗粒组分的天然IRSL和GLSL信号水平很低，约80-100光子计数/秒，相对应的等效剂量值小于1Gy。这可能表明，华北地区大多数黄土及水沉积物的IRSL和GLSL计时器在沉积过程中可能已基本&回零&。细颗粒IRSL和GLSL的光晒退实验结果也说明这一点。

All-electric interlocking interconnection operates in the station through the signal tower in control bench the light signal and the electrically operated railroad switch realizes the interconnection and the inspector general train movement.

电气集中联锁通过信号楼内的控制台操纵车站内的色灯信号机和电动转辙机实现联锁和监督列车运行。

A mechanical device that uses illumination as a signal or warning, especially a beacon or traffic signal.

信号灯：一种作照明信号或警告的机械装置，尤指灯塔或交通信号灯

As the component of sensor board, the silicon photoelectric cell transforms radiation-ray from the track mark into electrical signal, which is amplified by operation amplifier into voltage signal reshaped by the pulse shaping circuit.

车载传感器板通过硅光电池检测轨道标志的反射光信号，运放将信号放大并转换成电压信号，再通过脉冲整形转化为脉冲信号，实现了轨道标志的检测。

A tooth-shaped waveform forming unit (105) shapes the waveform of the frequency range signals outputted from the repetition unit (104), into a tooth-shaped waveform, and an IFFT unit (106) converts the frequency range signal outputted from the tooth-shaped waveform forming unit (105), into a signal of a time range.

在梳齿状波形生成单元(105)，将由重复单元(104)输出的多个频域信号波形生成为梳齿状波形，而在IFFT单元(106)，将由梳齿状波形生成单元(105)输出的频域信号，变换为时域的信号。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。