渗流

Based on the summation of numerical solutions of the free water surface seepage flow, a new concept called Regional Identification Function is put forward. It is pointed out that the reason why the initial flow method is unstable is that the RIF is discontinuous. Linearization continuity method for the RIF is suggested and then a revised initial flow method is presented.

在总结现有自由面渗流求解方法的基础上，提出了区域识别函数的新概念，指出区域识别函数不连续是导致初流量法解不稳定的主要原因，并对此函数进行了线性微调，提出了改进初流量法。

Under dry and low water saturation condition, gas percolation curve shows as convex shape, the permeability becomes lower, and the slippage effect is more evident.

在干燥和低含水饱和度状态下，气体渗流曲线呈上凸型，渗透率越小，受滑脱效应的影响越明显。

The research showes a good correlation exists among curve of load-deflection,changes in electrical resistance and AE hits.

材料内部的损伤引起相互搭接的渗流网络破坏，而致使材料电阻增大。因此，在整个加载过程中，体系的电阻反映了材料内部的损伤。

By means of image theory and potential superposition principle,this paper presents the analytic solution of water cresting height and lateral distance from wellbore under steady flow,and optimizes the optimum wellbore placement.

该文利用镜像反映和势的叠加原理，给出底水油藏水平井稳定渗流情况下不同时刻和临界条件下底水脊进高度和水脊面距井轴的侧向距离的解析解，同时结合矿场实例给出实际优化水平井最佳井筒位置，其结果和方法对底水油藏水平井油藏工程设计和理论研究具有一定的指导意义。

At same time,the critical water level is proposed in accord with the trend of.

同时以大坝综合渗透率是否随时间增大为标准，提出了监控大坝渗流稳定的临界水位，对实际运行监控有一定意义。

The next step is to found the model of a cylindrically layered borehole embedded in poroelastic media.

首先分析了声波在孔隙介质中传播时渗流运动的特点，着重讨论了附加质量和动态渗透率的意义。

For the percolation model on lattice nested fractals, thecritical phenominon, exponential decay law are investigated in the second chapter.

第一章研究了SierpinskiGasket格点图上边渗流模型的临界现象、指数衰减律和临界值的唯一性。

By analyzing the educt and oxide of 〓 powder and BN powder, it is foundthat residual inside the composite is the main cause for the deliquescence of thecomposite and that the boron oxide mainly comes from the BN.

添加烧结助剂，既有效地促进了样品中导电网络的构成，又对〓-BN复相导电陶瓷的电阻率产生很大影响，而且〓配比越接近渗流阀值，烧结助剂的影响越大。

Experimental study of depressurization and augmented injection with surfactant of low concentration is carried out in several low permeability oilfields.

在绝对渗透率难以改变的客观条件下，通过改变油、水及岩石间的界面张力，从而改善油、水渗流性，提高水相渗透率，降低低渗透油层注入压力，并在一些低渗透油田开展了低浓度活性剂降压增注试验研究，取得了一定的效果。

Combined with the percolation theory of low permeability oil reservoirs,we derived the function of det...

结合低渗透油藏渗流理论得到了低渗透油藏确定极限技术井距的公式，可为低渗透油田开发确定合理井网密度提供理论依据。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。