This paper describes two main problems existing in the operationof multiphase pta-alas, such as inlet solid and slug flow. 闡述混輸泵在運行中所遇到的進口雜質和段塞流問題，並提出解決方法。
Empirical or semi-empirical correlations are adopted to calculate slug flow parameters. 段塞流流動特性參數的計算只能採用經驗或半經驗關係式。
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