rotameter / roʊˈtæm ɪ tər, ˈroʊ təˌmi- /

🎓大学词汇旋转参数旋转直径转数转径

rotameter 的定义

n. 名词 noun
  1. an instrument for measuring the rate of flow of a liquid, consisting of a tapered vertical tube in which a small float is forced upward until its weight balances the fluid force.