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
It hurts so much when a baby gets his first teeth.
小孩子长第一颗牙齿时好痛哟。
They say we're going to get some rain later.
据说待会儿要下雨。
Some really keen enthusiasts go so far as to build their own computers.
有些热衷于自己动手的人甚至自己组装电脑。