本文用线性系统方法研究了变流量非稳定流抽水试验资料。
In this paper, a study on the variable discharge unsteady flow pumping test data is made using a linear system method.
本文推导了二维非稳定流渗流场不同等级网格有限差分理论方法。
This paper gives the deduction of a theoretical method of the finite difference by different grades of grids, which is suitable for the seepage field of two-dimensional unsteady flow.
本文在非稳定流基础上推导出降水引起基坑周边土体的沉降计算公式。
In this paper, based on the unsteady flow around foundation derived precipitation caused soil settlement formula.
稳定流理论作为非稳定流理论的特例，在干扰井群计算中应用较广泛。
The steady flow theory, being a special example of unsteady flow theory, is widely used in the calculation of interferential Wells.
本文用它求解非稳定流地下水运动方程，并证明了算法稳定性及收敛性；
The paper solved unsteady groundwater flow equation with the mentioned disperse pattern and the results have shown its stabilize astringency.
将地下水非稳定流涌水量计算解析式作为基本公式，列表进行水源地调节计算。
The paper takes the correlated non-steady-flow inrush water calculation formula as the basic formula, and has the well field regulating calculation in the form of tables.
研制出了一种现场快速测定岩心渗透率的仪器，该仪器采用非稳定流法测定渗透率。
An instrument for on-site permeability fast detecting is developed, which measure the permeability using non-stabilization flow.
本文针对“二元结构”含水层研究了在定流量抽水下非完整井非稳定流情况下的计算方法。
The general drawdown equation and its particular cases for a partially penetrating well discharging at a constant rate from an aquifer-aquitard system are derived and investigated.
通常对于低渗储层进行水驱油测试采用非稳定流方法，但该测试方法准确性较差，不能满足生产要求。
Nonsteady flow method is usually used to conduct water drive test for low permeability reservoir, but it is less accurate and cannot meet production need.
在考虑了阀门井水流、各水头损失及廊道和支孔惯性长度的影响之后，推导了船闸廊道复合管非稳定流的基本方程组。
The basic equations describing unsteady flow in lock manifold are derived, in which various hydraulic loss and inertia head of culvert and ports are included.
分析表明，当由简谐声源所发射的声波在一维非稳定流中传播时，对于某一确定位置，其声压幅度除随时间周期变化外，还受到M和（?）
When a harmonic wave propagates in one-dimensional unsteady flow, the wave amplitude at any x-position will be related with Mach number M and (?)
这两者各具特点，但又有机地联系在一起。水电站有压输水系统非恒定流对水电站的稳定及安全运行有很大影响，所以对其研究也倍受人们重视。
The non-steady flow in pressure water-carriage system have quite influence on the stability and safety of operation of hydropower station, so it is paid more attention.
与经典的平行流边界层稳定性结果相比，显示了在某些条件下非平行性对稳定性的关键作用。
The key function of the non-parallelism under some conditions is shown by the comparison of the results from the classical stability problem of the parallel flow.
采用线性稳定性理论和多重尺度方法，研究三维可压缩的非平行流边界层稳定性问题。
The compressible linear stability theory and the method of multiple scales are used to study the problem of three dimensional nonparallel flow stability for boundary layers.
比较研究了薄板坯连铸用二孔型水口和四孔型水口流场特征，水模试验结果表明，采用两种水口的薄板坯结晶器流场均存在非稳定性现象。
The characteristics of fluid flow in the mould of two ports SEN and four ports SEN have been compared and the influences of SEN on the level fluctuation are investigated by water modeling experiment.
对在均匀流场作用下的二维非稳态晶体生长控制方程进行了分析，证明了原定解问题的解是稳定的。
The stability about the solution of the original problem is proved by analyzing a two-dimensional time-dependent control equation for crystal growth in a uniform convection field.
将笔者以前关于近磁尾赤道面附近的漂移气球模不稳定性工作推广到非赤道区和存在非定常地向流的情形。
Previous work on drift ballooning instability in the equatorial region has been extended to include a decelerated non stationary flow and to consider the off equator regions.
从渗流的特点出发，对稳定井流与非稳定井流似稳定阶段中各要素的特征进行了对比，找出相似之处。
The similar parts had been found through the comparing of the characteristic of each factors in the steady well flow.
油田进入大面积开发后，进行的定点和非定点压力恢复测试中，存在着由于无法准确的测试稳定流压，造成解释结果偏差问题。
The fixed-point and the non - fixed-point buildup test at full development of oilfield can't accurate test stability flowing pressure that results in deviation.
我们发现对轴对称扰动稳定的吸积流外激波对非轴对称扰动却是不稳定的。
We find that the outer shock solution, which was previously found to be stable with respect to axisymmetric perturbations, is, however, generally unstable to non-axisymmetric ones.
非稳定边界是指，模拟流场和外部环境通过它进行的物质、能量和信息交换具有重要影响且该交换规律难以准确刻画的边界。
Substance, energy and information can exchange between simulation area and outside through non-stable boundaries and it is difficult to describe the exchanging rule accurately.
非牛顿流体在地层中的粘度是一个随剪切速率变化而改变的非常数，反映在不稳定压力响应特性上表现出与牛顿流大不相同的特征。
Non-Newtonian fluid viscosity in the formation of a shear rate of change with variable, stress response reflected in the instability shown by different characteristics of Newtonian flow.
使用集总参数非线型模型来分析蒸发管中汽液两相流压力降型脉动，结果表明：压力降型不稳定性可以用二阶常微分方程来描述。
The pressure drop pulsation is analyzed by using a lumped parameter nonlinear model. The results show that the pressure drop type instability can be described by a second-order differential equation.
使用集总参数非线型模型来分析蒸发管中汽液两相流压力降型脉动，结果表明：压力降型不稳定性可以用二阶常微分方程来描述。
The pressure drop pulsation is analyzed by using a lumped parameter nonlinear model. The results show that the pressure drop type instability can be described by a second-order differential equation.
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