原横断面積の英語

塔内にイオン交換樹脂が充填され、イオン交換樹脂層に対する原液の通液方向と再生用薬液の通薬方向とが向流とされるイオン交換塔において、塔内に、流れに対する塔横断面積を狭めて流速を少なくとも局部的に増大可能な仕切板を有する構造体を設けたことを特徴とするイオン交換塔。例文帳に追加

The ion-exchange tower which is filled with an ion-exchange resin and in which the flow direction of an original liquid and the flow direction of a chemical solution for regeneration to the ion-exchange resin layer are reversed to each other is provided with a structure body having a partitioning plate capable of at least partially increasing the flow speed by narrowing the tower transverse cross-sectional surface area to the flow. - 特許庁