Directional emitter
[化] 定向发射体
🧩 词语组成解析
directional
[[di'rekʃənəl]]
a. 方向的
n. 发射体, 发射极\\n[计] 发射极; 发射器
🗣️ 情景例句
No, it's an original. My father's friend is a calligrapher, and I had him make it for you.
没错，这可是真迹。我父亲的朋友是书法家，专门帮你写的。
We can offer a discount in progressive stages according to the size of the order.
根据订购数量的大小，我们可提供累进的折扣。
I don't have any small pads. I only have large one. Do you want a pad?
我没有小本的信纸，只有大本的。您要一本吗？