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Based on natural gas state equation and dynamic theory of natural gas migration, natural gas velocity of flow rate equation before and after temperature and pressure decreasing is fetched, and with which interface natural gas lengths in different reservoirs are calculated and the changing law of equivalent-length natural gas in migration is analyzed, whence it is discovered that migrating velocity of natural gas along tilting up reservoir is increasing inch by inch, along with temperature and pressure continuously decreasing.

由此发现,在运载层物性不变的情况下,天然气沿上倾地层向上倾方向运移的过程,是随地层温度和压力不断降低、其运移速度逐渐增大的过程,如果有后续气体的加入,会使气体长度增大,致使运移速度增加得更快。

Along with increment of mean photon number, there is no change in the oscillation period of the squeezing curve, but its scope increases obviously and its stability begins to reduce; when the mean photon number and the field mold structure fixed, the speed of moving atom has a great infection on the extent and period of the radiation squeeze. With the speed of moving atom increasing, not only the complete squeezing effect would be archived, the stability would also enhance.

随着平均光子数的增加,压缩曲线的振荡周期没有明显的变化,压缩曲线的振荡幅度明显增大,压缩的稳定性变小;在平均光子数和场模结构参数一定时,原子运动速度对光场压缩的深度以及压缩周期影响程度较大,增大原子运动速度,不但可以实现完全压缩光场,而且压缩的稳定性得到提高。

In short, make the run-up speed increased to a maximum that can be controlled.

总之,要使助跑速度不断增加到一个可控制的最大速度。

Proper Schipperke movement is a smooth, well coordinated and graceful trot (basically double tracking at a moderate speed), with a tendency to gradually converge toward the center of balance beneath the dog as speed increases.

舒柏奇犬正确的动作应该是平顺、非常整齐而优美的小跑(基本上,在中等速度下,是双重轨迹),在速度增加时,为了保持平衡,足爪趋向于向身躯中心线收拢。

Graying due to age or occasional white hairs should not be penalized. Gait nProper Schipperke movement is a smooth, well coordinated and graceful trot (basically double tracking at a moderate speed), with a tendency to gradually converge toward the center of balance beneath the dog as speed increases.

由于年老而出现灰色(7岁或更大),及偶尔出现白色被毛,不属于缺陷。nn n舒柏奇犬正确的动作应该是平顺、非常整齐而优美的小跑(基本上,在中等速度下,是双重轨迹),在速度增加时,为了保持平衡,足爪趋向于向身躯中心线收拢。

In this thesis, I summarize the theoretical calculation method, applied scope and notice of siphonic drainage system, and point out the advantage of siphonic drainage system compared with gravitation drainage system. In the archetype experiment study of siphonic drainage tube, I adopt different tube diameter and different structural height to survey the drainage volume and press in different place. I observe various kinds of flow state, and get chief factors which influence hydraulic peculiarity of system as the tube diameter or structural height, and find out the relevance of factor to flux. I apply CFD Fluent software and adopt standard k-ε model and RNG k-ε model, then use finite volume method and second-order upwind scheme to discrete numerical model, while coupling numeration of velocity field and press is based on SIMPLE. In the numerical simulation of curved part of tube, siphonic drainage tube experiment system and multi-outlet siphonic drainage system, I make research on internal velocity and press of system in different project condition by changing the tube diameter of curved part, negative press value in tube export and improving the quantity of water gutter. This thesis first adopts a method of combining archetype experiment and numerical simulation to study the siphonic drainage system, test and verify the validity of experiment and numerical simulation, and makefurther study on system, it solves the problems of limited testing conditions, and has a logical results, it can provide a valid method for optimizing and designing the drainage tube-net system. The conclusion have referring value for study and design of siphonic drainage system.

本文首先对虹吸式排水系统理论计算方法、适用范围以及注意事项做出总结,并分析了虹吸式排水系统的优势;再对虹吸式排水管道进行原型试验研究,采用不同管径不同立管高度,对系统流量、管道压强进行量测,观察了各种工况下的流态,对其水力特性进行研究分析,找出影响水力特性的落差、管径主要因素以及与排水量的关系;进一步应用计算流体力学Fluent软件,采用标准κ-ε模型与RNGκ-ε模型,计算过程应用有限体积法和二阶迎风格式对数值模型进行离散,速度和压力的耦合采用SIMPLE算法,分别对系统弯管段、虹吸排水管道试验系统、多斗虹吸式排水系统进行数值模拟分析,通过改变管段弯头处半径、管段出口负压值、增加雨水斗数对不同工况下系统内部的速度和压力进行研究;本文首次采用结合原型试验与数值模拟相结合的方法,对虹吸式屋面雨水排水系统进行研究,试验与模拟相互验证,并进行拓展,很好地解决了虹吸式屋面雨水排水系统由于试验条件限制问题,结果正确合理,为排水管网系统设计和优化研究提供了有效的方法,对工程设计有较好的参考价值。

Using a single pulse solar cell tester with constant light intensity for 5ms, we have studied the performance of conventional crystalline silicon solar cell with low concentrator( 1~10 sun)and cells temperature of 15~110℃at laboratory.

结果表明,室温下常规太阳电池的最佳工作点电压V_m和光功率放大系数a随入射光强增加呈现先增后降的趋势,并且串联电阻小的电池下降速度慢,串联电阻大的电池下降速度快;温度对晶体硅太阳电池的工作电压和输出功率相当敏感;在严格控制太阳电池工作温度的条件下,串联电阻小的电池在较宽的聚光范围内可以获得良好的使用效果。

The experiment results show that the equipped cars average speed is higher than those unequipped cars, and when the Car-to-Car is added, the whole average travel speed of vehicles has risen markedly, the average travel time is significantly reduced.

并且车辆平均旅行速度随着Car-to-Car设备市场占有率的增加并非呈一直增长趋势,而是呈先增后减趋势,即在一定的市场占有率之下,路网车辆平均速度达到最高。

The velocity of updraft is increased by the action of electric field force.

在电场力的作用下,上升速度增大,即雷暴中的电场力促使上升气流速度的增加。

China's urbanization rate will increase by nearly 1 percent annually during the coming 15 to 20 years, which means that China will urbanize 300 million rural people during the period, Xu said.

徐说,中国在未来15年到20年的城市化速度将是按照每年增加一个百分点的速度增长,那将意味着在这段时间内将有3亿农村人口被转化成城市人口。

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