Optronics
光电子学, 光导发光学
🗣️ 情景例句
I would lke to place an order please.
我要下定单。
Great talkers are little doers.
人好说大话，并非实干家。
The efficiency is greatly raised,and the intensity of labor is decreased.
工作效率大大地提高了，而劳动强度却降低了。