二项式的

On two binomial coefficient s and their related combinatorial identities;2. Several identities on binomial coefficient s and trigonometric func tion values of special angles are obtained.

利用组合数学的一些技巧给出了切比雪夫多项式的通项表达式，并得到了一些二项式系数，特殊三角函数值的恒等

By statistic analysis for modified isochronal testing data from many wells in gas field, the well testing tech of one point method to acquire empirical equation for calculating absolute open flow potential under different work systems and by use of binomial equation coefficient to count inertia r.

通过气田多口井修正等时试井数据进行统计分析，获得了一点法试井在不同生产时间下计算无阻流量的经验公式；利用气田修正等时试井的二项式方程系数B，计算惯性阻力系数并经过曲线回归处理获得了经验关系式，很好地解决了一点法试井计算产能方程的问题。

With a given bias threshold, the correctness for a prediction model can be descr ibed by a reliability function of binomial distribution.

在给定门限偏差的条件下，模型预测结果的正确与否可以用二项式分布的可靠度函数来描述。

At present, the establishment of the binomial deliverability equation is based on a horizontal circular, equal thick and homogeneous gas reservoir model in which gas flows into well bottom in the form of radial flow.

目前二项式产能方程的建立是基于一种圆形水平、等厚和均质的气层，气体径向流入井底的模型。

Nevertheless, the traditional binomial produ ctivity equation can't work under the formation pressure unknown.

气井产能方程能够直接描述流压与产量的关系，但是传统的二项式产能方程在地层压力未知或者地层压力不准的情况下无法使用。

Using binomial distribution P + Q = 1 to describe "succession attribute" of three suffered stand systems, the coefficients of 1, 3, 3, 1 in the binomial equation of3 will become assessment of probability in different attributes of systems.

对3个蠢害林分系统的"演变属性"用二项分布P+Q=1来描述，那么二项式3方程中的系数1、3、3、1成为系统中不同"演变属性"的概率论判断。

Research about the Binomial and Chebyshev Match;2. Nevertheless, the traditional binomial produ ctivity equation can't work under the formation pressure unknown.

气井产能方程能够直接描述流压与产量的关系，但是传统的二项式产能方程在地层压力未知或者地层压力不准的情况下无法使用。

Thirdly, a research is done on the stage investment in the venture investment andthe re-evaluating value of venture investment based on analyzing the actual performance of the venture enterprise. Then a real option decision model by using the binomial theorem is suggested creatively in this paper.

最后，在对分阶段投资和基于实际业绩的价值重估进行分析的基础上，基于二项式期权定价公式推导出了一个针对分阶段投资的实物期权决策模型。

Considering that rock's permeability is exponential function along with formation pressure and starting from nonDarcy percolation theory of gas at high speed, this paper derives a new pseudo pressure binominal exponential deliverability equation and its solution method.

在考虑岩石渗透率随地层压力呈指数函数变化的基础上，从气体的高速非达西渗流理论出发，推导出新的拟压力二项式产能方程及其求解方法。

Of many steady testing work that have been done at Shunan gas reservoir in Maliuchang gas field, data process are respectively conducted by traditional multi-point binominal or exponential process data and one point method for deliverability equation.

在蜀南气矿麻柳场气田进行了大量的稳定试井工作，分别用传统的多点法二项式、指数式处理资料，以及用"一点法"产能公式进行资料处理，发现两者求出的气井绝对无阻流量偏差达到30%-90%，甚至更高。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。