concentric annuli meaning in Chinese

同心环管芯

Pressure drop of flow of pam aqueous solution in concentric annuli with isometric ring slots on the inner cylinder
聚丙烯酰胺水溶液在内管带有等距环槽的同心环空中流动的压降
In this paper , the transition from churn flow to annular flow for upward gas - liquid in vertical concentric annulus is studied and a transition model is developed by considering the structural feature of the concentric annulus and the flow characteristics for churn and annular flows in the concentric annulus
根据团状流及环状流的流动特性，并考虑同心环形管的结构特徵，建立了垂直同心环形管上升气液团状流向环状流转换的新的理论模型。
In order to study the stability of non - newtonian fluid and its flow pattern discrimination method , the integral stability theory and local stability theory are applied to the concentric annulus flowing of plastic fluid and power - law fluid , then a relevant stability parameter expression of discriminating flow pattern is derived and set up in the paper
摘要针对非牛顿流体的稳定性问题及其流态判别的研究，将整体稳定性理论及局部稳定性理论应用于塑性流体和幂律流体在同心环空的流动中，建立和推导出相对应的判别流动状态的稳定性参数表达式。