K-factors
(K-factor 的复数) [医] K系数, [中子]增殖系数
🧩 词语组成解析
n. 因素（factor的复数）
🗣️ 情景例句
Reading?
读书？
They operated on him last night.
他们昨晚给他动手术了。
There's an old teapot over there. Isn't it beautiful! said Ann.
“那儿有一个旧茶壶。它不美丽吗？” 安说