首先，从编程的观点来看，它从来不会检查变量值是否有效，如果激活警告信息，这就是要注意的一个因素。
From a programming perspective, it has the issue that it never checks if any of the variables have a valid value, a fact that would be highlighted if warnings were switched on.
从含有大量噪声的航空重力仪测量值中提取重力场信息，最常用的方法是使用低通滤波器。
One of the most popular approaches to extract the gravity field information from the much noisy measurement that observed by airborne gravimeter is lowpass filtering.
把传输的信息编码成脉冲的振幅，因而使每个预先规定的脉冲能量值对应于一个信息。
The transmitted information is coded into the amplitude of the pulses so that each predetermined value of pulse energy is associated with a message.
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