分ぶん級きゅう

noun, noun or participle which takes 'suru'

classification by fluid resistance; particle sizing

Technical term used in engineering and materials science for separating or classifying particles based on their behavior in a fluid (e.g., air or water). Often used in contexts like powder technology or mineral processing.

• この装そう置ちは粉ふん体たいの分ぶん級きゅうに使つかわれる。

  This device is used for particle classification.

• 風ふう力りょく分ぶん級きゅうによって微び粉ふんを除じょ去きょする。

  Fine powder is removed by air classification.