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.
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.
并根据膜孔灌水流现象，把膜孔灌过程划分为四个阶段，进而分析了各阶段的水流状态。
Repending on the phenomena of film hole irrigation, the authors divide irrigation procedure into four stages, and fully analyse water's state of each stage.
双稳态复合材料能在风力及水流状态变化时迅速改变空气动力形态，帮助去除涡轮叶片上多余的压力。
A bistable composite capable of altering its aerodynamic profile rapidly when wind and current conditions changed would help to remove unwanted stresses in the blades.
采用水-气二相流模型模拟得到水相、气相的流动状态，为定量研究孔隙气压力对入渗水流的影响提供了有效途径。
And flow of water and air simulated by numerical model of water-air two-phase flow could be used to quantitatively analyze the influence of air pressure on infiltration of water into soil.
排水时，将孔板底部脱离封闭状态，水流可将沉淀物冲起排出。
The bottom of the hole plate is separated from a closed state when draining, and the water flow can flush and exhaust the precipitate.
高炉炉缸的侵蚀和炉缸内铁水流动的状态密切相关，铁水流动对炉缸炉底的冲刷是炉缸侵蚀的重要原因。
The erosion of the hearth has a close relationship with the state of liquids flow in the hearth of blast furnace.
结果表明，在引水期水库的流场达到稳定状态时，水库流场有一个自东向西的水流主要通道。还对水库出口处有初始水体流速的情况进行了模拟。
The simulated results indicate that when the stream field begins steady, there is a steady main flow channel from the east part of the lake to the west part.
疏水阀处于关闭状态，直到蒸汽足够冷却到凝结为凝结水。这时膜盒重新回缩并让水流进回路管道。
The trap remains closed until the steam cools and condenses into water. The bellows retracts to allow the water into the return piping.
该模型不仅反映了网状河道中非稳态的水流及水质变化特点，还反映了水体分别处于好氧、缺氧、厌氧状态下的水质及底泥中主要污染物的变化规律。
The unsteady model with multiparameter reflects the characteristics of the unsteady flow in different directions and that of the unsteady water quality under aerobic, anoxic and anaerobic conditions.
结果表明，场协同理论同样适用于水流绕流振动圆管湍流状态下的换热。
The result shows that the field coordination principle is applicable as well to heat transfer when water flows turbulently around vibrating pipe.
认为原始盆地存在两大物源体系及相应的两大古水流体系并处于南北向扩张为主的状态中。
There existed two main sediment source systems and two correspondingpalaeo-current systems in the original basin and the original basin was in an extensional environment of north-south trend.
针对水流与蔬菜的动力来源——叶片，分析了叶片在水体静止与运动状态下的受力分布情况；
In allusion to the dynamic source of water stream and vegetable, that is, vane wheel which was analyzed the force distribution in the static and motive water.
针对水流与蔬菜的动力来源——叶片，分析了叶片在水体静止与运动状态下的受力分布情况；
In allusion to the dynamic source of water stream and vegetable, that is, vane wheel which was analyzed the force distribution in the static and motive water.
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