envelope是什么意思
envelope的意思是信封，封皮，壳层，外壳，包裹物，[生物学]膜，包袋。
envelope可以用作名词
①信封，封袋
There are several enclosures in the envelope.
信封内装有几份附件。
I use a prepaid envelope.
②包裹物；包装物；覆盖物
The entire foot was encased in an envelope of cotton material.
整只脚用棉布包住了。
③囊膜；包膜；包被；外膜；外壳
The outer envelope will then grow rapidly, increasing, in a short interval, hundreds of times in size.
恒星的外层会迅速成长，在很短的时间内，体积就会增加数百倍。
扩展资料
词汇搭配
①envelop in 围绕(裹在 ......
Study of Energy Saving for Building Envelop in East of China.
华东地区围护结构节能研究围护结构与建筑热稳定性。
②envelop function 包络函数
It shows that the envelop function in the previous references is not fit to calculate the photoionization cross-section.
这说明，由于前人选取的包络函数在边界上不能同时满足波函数的连续性及粒子流的守恒条件，在计算光电离截面时并不适用。
③envelop modulation 包络调制
The method of complex envelop modulation is employed in generating the target reflecting signal.
目标回波信号的产生采用复包络-调制法。