1) point sieve function
点筛函数
1.
<Abstrcat> We introduce the concept of point sieve function,and estimate the measure grade of it,determine the coefficient of main term of estimate formula,and then determine the measure grade of main term of Goldbach function.
引入了点筛函数的概念,并对它进行了量级估计,确定了估计式的主项系数,进而估计了Goldbach函数主项的量级。
2) sieve function
筛函数
1.
A group of new sieve functions and a new sieve of theory method were given to provide a new way of studying the problems of the prime twins and Goldbach conjecture.
给出一组新的筛函数 ,并提出一种新的筛法理论 ,为孪生素数问题与Goldbach猜想的研究提供一条新的思
2.
Five basic properties of the sieve functions of the prime twins were studied.
研究并给出了孪生素数筛函数的五条基本性质。
3) point source function
点源函数
1.
Two types of novel point source functions, which can be direct employed in construct of solutions for well test analysis, are prese.
应用积分变换方法解析求解两类一维有源和补给边界的不稳定渗流问题 ,得到两种新的不稳定渗流点源函数 ,该函数可直接用于构造试井分析的数学模型。
2.
Based on point source function, this paper sets up a mathematical model with unsteady-state seepage flow for horizontal wells and multilateral wells, with integration of multiple knowledge such as reservoirs geology, seepage theory, Green function, partial dif-ferential equations and computational mathematics.
以水平井和多分支井为研究对象,以点源函数理论为基础,综合运用油气藏地质、油气藏渗流理论、格林函数、偏微分方程及计算数学等多方面的知识,建立水平井和多分支井的不稳态渗流数学模型,对模型在拉氏空间内进行求解,并特别研究了鱼骨形多分支井的渗流特征。
4) source function
点源函数
1.
The paper uses the source function to establish the pressure distribution which the top and bottom of the reservoir are impermeable in Laplace space and uses Duhamel theory to analyses the influence of skin factor and storability.
利用点源函数的思想,求解了各向异性无限大地层水平井在拉氏空间中的无因次压力响应函数。
5) finding point function
找点函数
6) Spot-value Function
点值函数
补充资料：点扩展函数
见光学传递函数。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条