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(shù)是以注水井井口壓降曲線爲(wèi)依據(jù)的壓力指數(shù)決策技術(shù)。
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(chǔ)上提出了用不穩(wěn)定試井資料確定氣井産能的新方法，即用壓力恢複曲線法與壓降曲線法相結(jié)郃確定氣井産能的新方法。
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爲(wèi)那些最易感的人群都得病了，但是隨著人們逐漸適應(yīng)，也就變得越來越少。