Pooled variance
[化] 合并方差
🧩 词语组成解析
a. 合并的
variance
['vɛəriəns]
n. 变化，变动;不一致;分歧;<数>方差;
🗣️ 情景例句
Nice to meet you, Mr. Johnson.
很高兴见到你 Johnson先生。
A fox should not be of the jury at a goose's trial.
审鹅不应狐陪审。
I don't like autumn and winter.The days are short and the nights are long.The sun rises late and set early.
我不喜欢秋天和冬天，因为此时白天短而夜晚长，太阳升得迟而落得早。