Index of refraction
[化] 折射率
🧩 词语组成解析
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
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
🗣️ 情景例句
My little boy is having a school play tonight, I don't want to miss it.
我的小儿子今晚会参加学校的戏剧表演，我不想错过了。
Hello. Could I please speak to Miss Davis?
喂，麻烦你，请戴维斯小姐听电话。
There is a television in the room.
客厅里有台电视机。