Tromp's partition curve

Japanese: Tromp's partition curve(英語表記)Trompspartitioncurve
Tromp's partition curve

...When the particle size distribution of the sieved product is measured and the distribution ratio of the raw material to the sieve product for each measured particle size range is calculated, a stepped diagram is obtained. The S-shaped curve that is drawn by smoothing this is called the Tromp partition curve or partial recovery curve. The horizontal coordinate value of the point where this curve intersects with the horizontal line of the distribution ratio of 50% is the separation particle size d 50. ...

*Some of the terminology that mentions "Tromp's partition curve" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ふるい分け産物の粒度分布を測定し,測定粒度区間ごとの原料の網上産物への配分率を求めると階段状の図形が得られる。これを平滑化することによって描かれるS字形の曲線をトロンプ配分率曲線Tromp’s partition curveまたは部分回収率曲線と呼ぶ。この曲線が配分率50%の水平線と交わる点の横軸座標値が分離粒度d50である。…

※「Tromp's partition curve」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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