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- Evidently, there is another motion to be concerned with and that is the propagation of the modulation envelope. 显然，还应当考虑另外一种运动，那就是调制包络的传播。
- Time delay of the modulation envelope of a signal in passing through a channel or network. 信号通过某个通道或网络的过程中，经调制的包络线发生的时间上的延迟。
- Have you stuck down the back of the envelope? 信封背面开口处贴牢了吗？
- He steamed the stamp off the envelope. 他用蒸汽把信封上的邮票揭下来。
- time delay of the modulation envelope of a signal in passing through a channel or network 信号通过某个通道或网络的过程中，经调制的包络线发生的时间上的延迟
- He glued a stamp onto the envelope. 他把邮票贴在信封上。
- As he picked up the envelope, a key dropped out. 他拣起信封时，一把钥匙掉了出来。
- As she picked up the envelope, a key dropped out. 她拾起信封时，一把钥匙掉了出来。
- Put a stamp on the envelope, will you? 在信封上贴张邮票，好吗？
- He stuck a stamp on the envelope. 他在信封上贴上邮票。
- Evidently, there is another motion to be concerned with and that is the propagation of the modulation envelope 显然，还应当考虑另外一种运动，那就是调制包络的传播。
- She opened the envelope with her fingertips. 她用指尖弄开了信封。
- Dynamic modulated envelops were analyzed by dimensional spectrum and modulated line spectrums achieved. 然后，利用小波变换求其功率谱从而得到辐射噪声的调制包络；
- The envelope's seal was torn open. 信封封缄被撕开了。
- The (flap of the) envelope was unstuck. 信封(的封口)没粘住。
- There are several enclosures in the envelope. 信封内装有几份附件。
- An envelope or wrapper for mail. 封套，信封为邮寄而制的信封或封套
- A good way to remove a stamp from an envelope is to soak it off. 从信封上取下邮票的一个好办法就是用水把它泡下来。
- I enclose a stamped addressed envelope for your reply. 兹附上贴有邮票并写好地址的回邮信封。
- He ripped off one end of the envelope and pulled out the letter. 他撕开信封的一端，抽出里面的信件。
