decline curve 中文意思是什麼
decline curve
解釋
遞減曲線-
The study results can be summerized as following aspects : ( 1 ) the basic settling curve of this basin was broken - line shape of seven sections in which upper jurassic, lower cretaceous, eocene, oligocene and neogene corresponded with the decline ones representing five episodic clear subsidences of this basin, late cretaceous to paleocene and early miocene corresponded with the rising ones reflecting the uplift and denudation of this basin. ( 2 ) the subsidence of this basin migrated from the east to the west, from mesozoic to cenozoic
研究表明： （ 1 ）北黃海盆地的基本沉降曲線型式為7段折線狀，其中晚侏羅世、早白堊世、始新世、漸新世、新近紀為曲線下降段，代表盆地5幕較明顯的沉降；晚白堊世古新世以及中新世早期為曲線上升段，反映盆地的抬升剝蝕。 -
Research on a new type of production rate decline curve
一種新型的產能遞減曲線研究 -
Firstly, the paper puts forward the natural and relative aspect for industrial blossom - decline, and then explains the approach to distinguish them by the curve of industrial life cycle and industrial relative blossom - decline
首先，本文提出應該將產業興衰區分為自然興衰和相對興衰兩個方面，然後分別採用產業生命周期曲線和產業相對興衰曲線來對其進行描述。 -
It also studies the influencing factors including sampling frequency, pd waveform, decline time, time intervals between pd pulses, mother wavelet, center frequency of interference, entropy threshold value and snr. in addition, it applies wavelet packet method （ wpm ） for non - stationary signal de - noising in on - line pd monitoring and analyzes the processing results under different pd waveform, sampling frequency and noise level. firstly, the curve of pd
基於小波包變換的非平穩信號消噪演算法（ wpm ）已較為成熟，本文將其應用於局部放電在線監測，通過研究其對不同局放波形、采樣率、噪聲水平下的處理效果，首次提出了理想白噪聲條件下提取局部放電信號的曲線，分析了各種因素對該演算法下信號失真的影響。 -
The curve of arpu value is on the distressing decline annually
Arpu值曲線每年都在令人痛心地下滑。 -
The technical system evolves over time, which process parallels the micro - evolution of biological systems and illustrates the life cycle stages of child, growth, maturity and decline. what evolves is the characteristic index of the technical systems whose improvement is shown by a s - curve on the time - scale
技術系統處于不斷的進化過程中，其進化過程類似於生物的成長過程，要經歷嬰兒期、成長期、成熟期和退出期四個階段，在時域上表現為特性參數沿s -曲線的增長。 -
For waterflooding oilfields, the methods for prediction of recoverable re - serves include water drive curve, production decline, forecast model and numerical simulation
然而，當油氣田業已進入遞減階段之後，產量遞減法則是最為重要的預測方法。
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