Elliptical tubesheet
[化] 椭圆管板
🧩 词语组成解析
[化] 管板
🗣️ 情景例句
Is something the matter, Grandpa?
怎么了，爷爷？
Keep your eyes wide open before marriage, and half shut afterwards.
婚前张开眼，婚后半闭月。
We're having trouble arranging for a carrier.
因为货运公司的安排有问题。