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
We once found a cat.
我们有一次找到一只猫，
My sister was born in nineteen thirty-eight.
我的妹妹是一九三八年出生的。
They were also quite sure that a cigarette end did not start the fire.
他们还十分肯定火灾也不是由烟头引起的。