fall-off curve

基本解释

PI decided-making is a pressure exponent decision- making technique based on wellhead pressure fall-off curve of water injectors.
PI决策技术是以注水井井口压降曲线为依据的压力指数决策技术。
Based on these, the new method that pressure build-up curve associated with pressure fall-off curve to determining the productivity of gas well is proposed.
在此基础上提出了用不稳定试井资料确定气井产能的新方法，即用压力恢复曲线法与压降曲线法相结合确定气井产能的新方法。
Dr Shaffer draws a parallel with a classic virus-infection curve: high at the beginning as those most susceptible fall ill, but gradually tailing off as people adapt.
谢弗博士画了一条和传统的病毒感染曲线相平衡的曲线：在一开始的时候很高因为那些最易感的人群都得病了，但是随着人们逐渐适应，也就变得越来越少。