您要查找的是不是：
- cosine chirp filter [计] 余弦线性调频脉冲滤波器
- Birds had begun to chirp among the trees. 鸟儿们已经开始在树林里叽叽喳喳地叫了。
- The conventional radar signal processing is used to the chirp coherent CO2 ladar in this paper. The match filter with cosine weight is presented for the signal process. 为了解决线性调频CO2相干激光雷达的信号处理技术，将普通雷达的信号处理方法引入相干激光雷达的信号处理中，提出采用余弦加仅匹配滤波的处理方法。
- You need to filter the drinking water. 你需要把饮用水过滤。
- A filter traps dust from the air. 过滤网可存住空气中的尘埃。
- The news of the defeat started to filter through. 战败的消息开始传出来。
- It won't take long to filter the coffee. 用不了多少时间就可以把咖啡过滤好。
- Birds had begun to chirp and twitter among the trees. 鸟儿开始在树丛中啁啾鸣啭。
- I took this picture with a red filter. 这张照片我是用红色滤光镜拍摄的。
- The cos() function returns the cosine of a number. 函数的作用是：返回一个数值的余弦值。
- We usually clear the water with a filter. 我们通常用过滤器使水净化。
- At night the crickets chirp in the woods. 夜里蟋蟀在林中唧唧地叫。
- The birds chirp merrily at the top of tree. 鸟儿在枝头欢快地啾啾鸣唱。
- Cos() returns the cosine of the arg parameter. cos()返回参数arg的余弦值。
- To make a faint, shrill sound or sounds; chirp. 啁啾发出唧唧的尖叫声；啁啾
- Put the coffee in the filter and let the water run through. 把咖啡倒入滤器里让水流过。
- What is the function of a cosine phase shifter? 与弦移相器有什么用处?
- The filter cleans the fuel before it enters the engine. 在燃料进入发动机之前，过滤器先把它过滤。
- The arccosine is the angle whose cosine is number. 反余弦值是指余弦值为number的角度。
- To make a faint,shrill sound or sounds; chirp. 啁啾发出唧唧的尖叫声；啁啾
