Directivity index
[电] 择向性指数
🧩 词语组成解析
[计] 指向性, 方向性
index
['ɪndɛks]
n. 索引;<数>指数;指示;标志;
vt. 给…编索引;把…编入索引;[经济学]按生活指数调整（工资、价格等）;
vi. [机械学]转位;
in(in)+dex(proclaim)→指针；索引；指数；食指；指标
🗣️ 情景例句
Too bad we can't bottle the sound.
不能将声音装瓶真是太可惜了。
What? Already? Won't you have more coffee?
怎么，已经要走了？要不要再喝点咖啡？
The police had a difficult time, but they were most amused.
警察虽然吃了苦头，但他们还是感到很有趣。