建立系统非恒定流数学模型。
Unsteay flow mathematic model of the system was established.
其实闸门开启过程中的出闸水流属非恒定流。
In fact, however, in the process of sluice opening, the outflow is unsteady flow.
道路具有恒定流的流量经过的每个人都想看看。
The road has a constant stream of traffic passing by as everyone wants a look.
最后，系统应用于恒定流单桩冲刷实验的地形测量。
Finally, the system applies in topographic survey of steady flow single pile scouring experiment.
如果水流状态随时间变化而变化，则称为非恒定流。
If the current status change with time, intitules as the unsteady flow.
提出了恒定流与非恒定流的水流结构相吻合的开启时间。
Therefore, the opening time when the unconstant flow structure corresponds to the constant flow structure is presented.
作为探索性研究，非恒定流模型是可行的，有发展潜力的。
As an exploratory research, unsteady flow model is feasible and potential.
用非恒定流数学模型对系统的输水管道、配水管道、调节池进行分析。
Conveyer and service pipes and regulating pond of the system was analyzed through unsteady mathematic model.
但在天然河道水面线计算中，为了节省工作量把不恒定流视为恒定流。
However, the unstable flow is usually considered as stable flow in the calculation of natural river water surface curve in order to minimize the calculation work.
从二维浅水非恒定流的控制方程出发，建立了一个二维湖泊流体动力学模型。
Based on the two-dimension adlittoral non-invariablenes flow control equation of lakes, a hydrodynamic model of lakes was built up.
一个点上的水流状态，如压力、流速和流量不随时间变化而变化，称为恒定流。
The current status of one point, such as pressure, flow rate and flow don t change with time, intitules as the steady flow.
本文对有压和明渠非恒定流的基本方程及尾水调压室的相关内容作了介绍和总结。
This article has introduced the equations and has summarized the knowledge of tail tank.
使用计算机计算明渠恒定渐变流水面曲线有两种分法：恒定流方法和非恒定流方法。
Steady water surface profile of gradually varied flow can be calculated using either a steady flow approach or an unsteady flow approach.
本文应用自适应最小二乘格型（LSL）算法估计非恒定流压力脉动的功率谱密度。
This paper uses the adaptive least squares lattice algorithm (LSL) to calculate the spectral estimation of pressure fluctuations in unsteady flow, and describes the principle of the LSL algorithm.
在恒定流计算过程中采用动能标准比最大水位修正和剩余质量标准更能有效地判别模型的稳定性。
The kinetic energy criterion more effectively represents the model stability in steady flow simulations than the maximum water level variations or the residual mass criterion.
在恒定流的条件下，利用拉格朗日函数导出了推广的伯努利方程，从而说明了寻找的能量泛函的正确性。
That the extended Bernoullian equations can be derived from the Lagrangian function under the condition of the flow being steady, demonstrates that the energy functional presen...
提出船闸引航道内水面波动的二维数学模型，采用二维非恒定流数学模型和船闸灌泄水一维数学模型联解。
A 2-d numerical model of wave motion in lock approach channel is described, which is soluted by using the method of resultants of 2-d numerical model of unsteady flow and 1-d numerical model.
总结了非恒定流减压试验的特点，并对恒定流与非恒定流两种减压试验方法的差异进行了初步分析和比较。
Due to the obvious difference between steady and unsteady depression model test, new test technique must be u…
进行非恒定流数值模拟计算，分析过渡过程中的水流特性，对输水系统的设备的设计和运行都具有重要意义。
It has vital significance to design and operate the water-carriage system's equipment to simulate the unsteady flow and to analysis the fluent characteristic of the transient process.
采用一维非恒定流方程模拟地下排水管网内的水流，并给出泵站、闸门、淹没出流管道等排水系统的处理方法。
The flow in the drainage pipe network is simulated by one-dimensional unsteady flow theory, and the calculation of the pumping stations, the water gates and submersed pipes is indicated.
在详细分析多孔并联分段低压输水系统水力特性的基础上，建立了这一输水系统的非恒定流控制方程以及关闸和不关闸条件下的保水堰边界条件。
The stepped low-pressurized water diversion system with parallel multi-holes in regulation tanks can reduce the pressure of the conduit and effectively simplify the control of the flow discharge.
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.
为了评价地下水水流条件的变化对放射性核素迁移行为的影响，该文以双重介质理论的裂隙迁移模型为基础，提出了非恒定流条件下单裂隙核素迁移模。
To assess how such changes may affect the nuclide transport behavior, the paper proposes a single fracture nuclide transport model under time-varying groundwater flow conditions based on t.
负责南安普顿研究的AbuBakr Bahaj说：潮汐流的能源前景比风能要好得多，因为水流是可预测和恒定的。
AbuBakr Bahaj, in charge of the Southampton research, said: The prospects for energy from tidal currents are far better than from wind because the flows of water are predictable and constant.
感谢特殊的隐形眼镜、藏于衣服内的电脑和分散于你到过的各处的位置传感器，你可以看到一个恒定不变的信息流和覆盖于真实世界之上的虚拟景象。
Thanks to special contact lenses, computers in your clothes and locational sensors scattered everywhere you go, you see a constant stream of text and virtual sights overlaying the real world.
然后单独的长的DNA分子被送入微流控芯片，静水压通过一个窄的通道以恒定的速度牵引它们。
Single long molecules of DNA are then fed into a microfluidic chip, where hydrostatic pressure pulls them at a constant speed through a narrow channel.
根据广东省台山市都斛镇灌排河网的特点，建立了河网非恒定出流数学模型。
Based on specific characteristics of river network in Duhu town of Taishan city, Guangdongprovince, a unsteady outflow model is established.
岩溶泉域地下水具有集中排泄的特点，它类似于流体力学中的非恒定孔口出流。
The groundwater in Karst spring basin has a characteristic of concentration drain, it is similar to unsteady orifice outflow in fluid mechanics.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
The traditional quasi-steady friction models are proved to be inaccurate in transient pipe flow because they underestimate friction losses in transients.
在液体管道瞬变流计算中，传统的拟恒定摩阻模型不能准确描述瞬变流的真实物理现象。
The traditional quasi-steady friction models are proved to be inaccurate in transient pipe flow because they underestimate friction losses in transients.
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