fall-off curve

基本解釋

PI decided-making is a pressure exponent decision- making technique based on wellhead pressure fall-off curve of water injectors.
PI決策技術是以注水井井口壓降曲線為依據的壓力指數決策技術。
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.
在此基礎上提出了用不穩(wěn)定試井資料確定氣井產能的新方法，即用壓力恢復曲線法與壓降曲線法相結合確定氣井產能的新方法。
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.
謝弗博士畫了一條和傳統(tǒng)的病毒感染曲線相平衡的曲線：在一開始的時候很高因為那些最易感的人群都得病了，但是隨著人們逐漸適應，也就變得越來越少。