Elliptical tubesheet
[化] 椭圆管板
🧩 词语组成解析
[化] 管板
🗣️ 情景例句
Do you want to get together and study sometime?
你想和我一起学习吗？
Nothing is impossible to a willing mind.
世上无难事，只怕有心人。
I think our manager will persuade the government to let him build a new factory.
我想经理会说服政府让他建新厂的。