an ipr equation of a production well describes the relationship between production rate and the bottom hole pressure.

transient ipr curves are a set of curves between flow rate and bottom hole pressure under different time.

不稳定IPR曲线是指不同的时间下井底压力与流量的关系曲线。

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the pressure and its derivative are also given for one fault, channel, u-shaped and rectangular reservoir by using the superposition theory.

利用叠加原理给出地层中有单一断层或供给边线，以及河道状油藏，U形油藏，矩形油藏等井底压力及其导数的双对数图。

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the study of the pdc anti-whirling

PDC钻头在井底的涡动分析研究

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ipr equation in a unsaturated reservoir was established from vogel equation.

基于Vogel方程，建立了未饱和油藏的IPR方程，并对测点井底流动压力高于或低于饱和压力的两种情形，分别提出了应用一点法确定油井IPR曲线，预测油井产能变化的方法。

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laplace space solution of the bottom hole pressure in double-porosity composite confined reservoir

双孔复合封闭储层中井底压力的Laplace空间解

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experimental study on the characteristics of fluid distribution at bottomhole of pdc bits

PDC钻头井底液流分布特性的实验研究

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analysis of bottom-hole stress field of two-stage pdc bit

双级PDC钻头井底应力场分析

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design of the experimental instrument for pdc bit downhole flow field testing

PDC钻头井底流场实验装置设计

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numerical simulation study on bottom hole flow field of pdc coring bits

PDC取心钻头井底流场的数值模拟研究

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it is the first that the application of plc to the loading system for the bottom of main shaft in our mine.

PLC在我国矿主井底装载系统中的应用还属首次。

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application of bp neural network for prediction of flowing bottom-hole pressure in flowing well

BP神经网络在自喷井井底流压预测中的应用

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application of plc in "signal centralization interlocking" system of shaft station

PLC在煤矿井底车场“信、集、闭”系统中的应用

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application of the bottom hole path cad to the rock bit insert arrangement design

井底轨迹图CAD在牙轮钻头布齿设计中的应用

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design and construction of 2000 tons shaft bottom coal bin

两千吨井底煤仓的设计施工

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field experiment of cage elastic supporting device at vertical shaft bottom

立井提升井底罐笼弹性承接装置的现场试验

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however, there were a few astronomers in greece and other places who didn't agree with the geocentric view, for example, a greek astronomer who lived in the third century b.c.e. he proposed the theory that our planetary system might be heliocentric, his name was aristarchus.

然而，希腊及其他地区也有几位天文学家不相信地心说的，比如说公元前三世纪的一位希腊天文学家就提出了我们的行星系统的日心说，他就是阿利斯塔克斯。

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it was presented in the works of well-known greek philosophers as early as the fourth century b.c.e., and the geocentric theory continue to prevail in western thought for almost 2000 years, until the 17th century.

这在公元前四世纪的希腊著名哲学家们的作品中都有体现，而地心说在西方国家也盛行到了17世纪，历经近2000年。

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geocentric means earth-centered, so the geocentric view holds that the sun, the planets, and the stars, all revolve around the earth, which is stationary.

顾名思义，地心说就是指宇宙以地球为中心，地球是静止不动的，太阳、行星及恒星都围绕地球来转。

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a concept of real object and real attribute is a real concept, a concept of imaginary object and real attribute is a real concept too.

虚对象、实属性，也是实概念，如思维科学中的概念；实对象、虚属性，是虚概念，如地心说中的概念；

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it seems a madness to us, and yet systems evolve and evolution we know, is not always reasonable or even tidy.

在我们看来似乎很疯狂，却使思考系统有进一步的发展，这套理论不仅合理，甚至会渐渐地显露出宇宙地心说的牵强。

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