Refractive index
[化] 折光率; 折射率
🧩 词语组成解析
a. 折射的, 有折射力的\\n[医] 折射的, 屈光的
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
She hasn't been employed for six months now.
她已经失业半年了。
I don't think so.
我想不是。
The fact that the policeman was prejudiced against foreigners could not be recorded in the official files.
警察歧视外国人的事在官方档案中不可能加以记载，