Stationary tubesheet
[化] 固定管板
🧩 词语组成解析
[化] 管板
🗣️ 情景例句
Yes, I use it fairly often.
有，我常用。
Everything is going according to schedule.
一切在按照预定计划进行。
This is because they had no natural enemies until the arrival of humans and therefore did not need to develop flying wings.
这是因为人类到达这里之前，这些鸟没有天敌，因此，它们不需要发育飞行的翅膀。