也就是说，利用网络获取信息的过程不仅是直接获得答案的过程，还是一个思考，判断和做选择的过程。
In other words, using Internet to get information is not only a process to get answer directly, but also a process to think, to judge and to make choices.
对AM信号进行峰值采样可以直接获得基带信号的信息，对PS K信号进行变频采样可以降低其载波频率。
By peak value sampling the information of baseband signal can be obtained from an am signal directly. By frequency conversion sampling the carrier wave's frequency of a PSK signal can be cut down.
对AM信号进行峰值采样可以直接获得基带信号的信息，对PS K信号进行变频采样可以降低其载波频率。
By peak value sampling the information of baseband signal can be obtained from an am signal directly. By frequency conversion sampling the carrier wave's frequency of a PSK signal can be cut down.
应用推荐