| 1. | Under appropriate conditions a multilayer may also be employed as a filter .
在适当条件下，多层膜还可作滤波器。 |
| 2. | One filter usually suffices for the entire visible range of wavelengths .
一个滤波器通常能满足整个光波可见范围的需要。 |
| 3. | We started with what seemed the most simple and obvious filter .
起初我们着手研究的是看起来似乎最简单和最明显的滤波器。 |
| 4. | They isolate the two species fairly well although they are far from being ideal filters .
虽然它们远不是理想滤波器，但仍然能把两个族分离得相当好。 |
| 5. | The signal is fed into a filter-amplifier which is transformer-coupled to the video-detector .
这个信号送到滤波器-放大器，它是由变压器耦合到视频检波器的。 |
| 6. | The mask acts as a low frequency spatial filter whose effect is to enhance rendition of fine detail .
掩模就象一个低频空间滤波器，其效果是增强细节的重现。 |
| 7. | In order to highlight the essential features of the wiener filter it has been necessary to simplify the design problem, as much as possible .
为了突出维纳滤波器的主要特点，已尽可能地简化了设计问题。 |
| 8. | Earlier in this chapter we introduced the concept of impulse response as the output of a filter whose input is a simple spike .
在本章的前面，我们介绍了当滤波器的输入是一个简单的尖锋脉冲时，作为该滤波输出的脉冲响应的概念。 |
| 9. | The scanning of the film by the photometer in the spacial domain is equivalent to the operation of a filter on a signal flowing through it in the time domain .
在空间域用光度计进行扫描，和时间域中滤波器对所通过的信号进行运算等效。 |
| 10. | Image coding based on wavelet and filter banks
基于小波和滤波器组的图像编码方法 |
