Envelope delay frequency
[计] 包络线延迟频率
🧩 词语组成解析
envelope
['envələʊp]
n. 信封，封皮;壳层，外壳;包裹物;[生物学]膜，包袋;
en 表示\"进入…之中，包围\" +velop =cover（盖上） +e → .信封, 封套, 封袋, [天]包层, [数]包迹, [生]包膜
frequency
['frikwənsi]
n. 频繁性;[数][物]频率，次数;频率分布;
fr + equ =equal,even,表示“相等，平均” + enc + y [形容词后缀] → n.屡次；次数；频率
🗣️ 情景例句
I see. Is a credit card OK?
我明白了。用信用卡可以吗？
How much is the interest a year?
每年利息多少？
In summer it is often too hot, and in winter it is too cold.
夏天常常太热，冬天又常常太冷。