这里信号不好。
Generally, because the output voltage signal is very weak, the signal voltage and the noise voltage can't be distinguished.
由于声表面波压电效应产生的电压信号非常微弱，一般放大不能分辨出信号电压和噪声电压。
That's because the phone USES energy searching for a good signal and, if the signal is very weak, trying to get a better connection.
这是因为手机会使用电能寻找耗得信号，如果信号特别弱，还要试着更好地去连接。
However, the scattered light is extremely weak and therefore yields a very low signal.
然而，这种散射光极其微弱，因此只产生一个非常弱的信号。
The experimental results show that the detector is very effective on extracting weak video signal from strong mixture noise.
实验结果表明，这种检测器对于从强混合噪声中提取弱视频信号是非常有效的。
Five: feeder, the feeder is very important, we must choose good, and we want to know the general antenna distance can't more than 50 m, or receiving signal will become weak.
五：馈线，这个馈线很重要的，我们必须要选择好，而且我们要知道一般的天线距离不能超过50米，要不然接收的信号就会变弱。
The experimental results show that the detector is very effective on extracting weak video signal from strong mixture …
实验结果表明，这种检测器对于从强混合噪声中提取弱视频信号是非常有效的。
Under weak signal environments, bit synchronization is very important and difficult in GPS receiver design.
弱信号下的比特同步在GPS的接收机设计中是一个重点也是一个难点。
The water-cooling system is very important for the safe operation of generator. The water leakage detection of the system is typically a problem of weak signal extraction under strong disturbances.
发电机内冷水系统是发电机组安全运行的一个重要组成部分，其渗漏监测是在强干扰下弱信号的识别问题。
Theroy and simulation study have shown that this detection system is very sensitive to weak sine signal under strong noise and can effectively restrain any strong noise which has zero mean.
理论分析及仿真实验表明该检测系统对被强噪声覆盖的微弱正弦信号非常敏感，对任何零均值噪声具有极强的抑制能力。
Simulation experiments show that the chaos detection system is very sensitive to weak signal and have strong constraint to any colored noise with zero mean value.
仿真实验表明该混沌检测系统对小信号非常敏感，对任何零均值色噪声均具有极强的抑制能力。
When using the IR sensor, the size of the target in the imaging plane of the camera is only one pixel or several pixels and the signal received is very weak when the target is far away in distance.
对于红外传感器来说，当距目标很远时，目标在成像平面上仅占一个或几个像素，且接收到的信号很微弱。
So it is a very important study to detect the weak fluorescence signal especially when there is much noise.
测量微弱的信号，噪声成了巨大障碍，如何实现低噪声的探测是关键所在。
However, the spontaneous EEG signals are very weak, noisy, and non-stationary signal, so efficient methods of EEG analysis is the core of BCI system.
然而，自发脑电信号非常弱，噪声大，而且是非平稳信号，因此合适的脑电信号分析研究方法是BCI系统的核心内容。
It is proved that stochastic resonance is a very useful tool for weak signal extraction from...
实验证明了随机共振技术在强噪声背景下弱信号检测的优越性。
For the signals are very weak, the lock-in amplifier is employed to extract the signals in the circuit design. It can inhabit the noise in the most and maximize the signal-to-noise.
在电路设计上采用锁相放大器来提取微弱信号，最大限度的抑制噪声，提高系统的信噪比。
For the signals are very weak, the lock-in amplifier is employed to extract the signals in the circuit design. It can inhabit the noise in the most and maximize the signal-to-noise.
在电路设计上采用锁相放大器来提取微弱信号，最大限度的抑制噪声，提高系统的信噪比。
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