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
This is more than I can take.
我再也受不了了。
Did you have a nice holiday?
你假期过得愉快吗？
I think that maybe his Chinese teacher will give Jim some work to do during the holiday.
我想吉姆的汉语老师也许会给他布置一些假期作业。