An extension is made to the original calculating formula for the multiple-stage series idealmixing reactor and a deduced design equation with its analytical method is obtained. 本文對原有的多級串聯理想混合反應器的計算公式，進行了引伸，提出了一種遞推設計方程式及其解析方法。
The general situation of domestic oil line pumps is presented,the hydraulic design formulas and performance curves of the multistage impeller pumps are given. 介紹了國內輸油管線泵的概況，並提供了多級中開式輸油泵的水力設計公式和性能曲線。
