Photosensor
[計] 光電傳感器; 光敏元件
??? 情景例句
Well ...
好……
It seems he has a lot of funny ideas.
看起來他好像有很多有趣建議。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
這個頻率是空間氫原子釋放的自然頻率，是在1951年被人類發現的。