Elliptical tubesheet
[化] 椭圆管板
🧩 词语组成解析
[化] 管板
🗣️ 情景例句
Good-bye, Miss Aborn.
再见 Aborn小姐。
Take care of small sums and the large will take care of themselves.
省小钱才能积大财。
Mary is still writing letters. She's been writing letters all day.
马力还在写信，她写了一整天的信。