Concave grating
[化] 凹面光栅
🏥 医学释义
凹光栅
🧩 词语组成解析
concave
['kɔn'keiv]
n. 凹面，成凹形;
adj. 凹的;
vt. 使成凹形;
grating
[['greitiŋ]]
n. 光栅, 摩擦, 摩擦声\\na. 令人气恼的, 刺耳的
🗣️ 情景例句
Lillian and I were married two weeks ago in Detroit. Lillian
和我已经在两周前在Detroit结婚了。
This country is localed in the southern hemisphere.
这个国家位于南半球。
Why? What happened?
为什么？发生什么事了？