Effective diameter
[机] 有效直径
🧩 词语组成解析
effective
[ɪ'fɛktɪv]
adj. 有效的;起作用的;实际的，实在的;给人深刻印象;
n. [军]现役兵额，有生力量，精兵;
ef出+fect做，制作 +ive形容词后缀 →做出来的 → 有效的
🗣️ 情景例句
I realize that pPeter wants you to marry him this summer.
我知道彼德想要你今年夏天和他结婚。
Thank you but this is something I have to do on my own.
但有些事情我必须自己做主。
One day she came into my room laughing happily.
有一天，她开心地笑着来到我的房间。