查询词典 cavitation

Therefore, the research on the character of the sound field and the cavitation field in the sonochemical reactor is vital for making certain the optimum condition of reaction, increasing sonochemical rate and promoting the sonochemistry transitted from lab scale to industry.

对准平面波入射时，反应器内置入圆柱形扩散体后的辐射声场进行了理论研究，知道圆柱形扩散体对改善反应器内的驻波特性使其均匀有一定的效果。 3、设计并制作了简易水听器，分析和测试了水听器的各项性能。

The aerators are widely used in flood discharge tunnel s and spillways to prevent the cavitation damage of the structures,and air is sucked by flow from the bottom in normal aerator.

龙抬头明流泄洪洞采用常规的底部掺气设施，容易在反弧末端下游附近侧墙处形成掺气盲区，从而导致该侧墙的空蚀破坏，反弧末端下游侧墙是龙抬头明流泄洪洞掺气减蚀设计的重点和难点。

Research for the Optimization test of outlet of flood discharge tunnel in Narrow Water Course with Large Included Angle;2. The aerators are widely used in flood discharge tunnel s and spillways to prevent the cavitation damage of the structures,and air is sucked by flow from the bottom in normal aerator.

龙抬头明流泄洪洞采用常规的底部掺气设施，容易在反弧末端下游附近侧墙处形成掺气盲区，从而导致该侧墙的空蚀破坏，反弧末端下游侧墙是龙抬头明流泄洪洞掺气减蚀设计的重点和难点。

The main research activities of the Department cover the general layout of hydro projects, hydraulics of spillways for high dams, energy dissipation and river bed or bank erosions, flow induced vibration, cavitation and air entrainment, river ice, hydraulic transient flow simulation and control on hydropower project, pumped storage project and long distance water transfer project, optimization of thermal/nuclear power plant and other industrial cooling systems, investigation of the fundamental theory of stratified/mixing flow and its applications, studies on fluid mechanics and thermodynamics of large scale cooling towers, hydraulic field observations for existing projects, development of instrumentation for physical model tests and field observations.

研究领域主要为水利水电枢纽总体布置、高坝泄洪建筑物水力学、消能防冲、流激振动、空化与空蚀、崩岸水力学与岸坡保护、河冰问题、水电站引水系统中的水力瞬变及调压井水力学研究、跨流域调水工程中的规划及水力控制数值仿真、冷却水的工程水力热力问题研究、环境水力学、火电厂水工模型试验与数值模拟研究、火电厂取排水局部泥沙冲淤试验、模型和原体监测仪器的研制和开发、以及过水现场原体监测。

Seeling, etc. explored at a two-way hollow mold hearth pore distribution, and Chen and Zhou indicate stress state on cavitation phenomena can be used bi-directional tensile test.

泽林等探讨了在双向炉缸模具中空孔分布，而陈和周表明应力状态对空穴现象的影响可利用双向拉伸实验。

The effects of opening size as well as cone angle on cavitation intensity in the water hydraulic poppet valve were numerically investigated.

为了抑制阀口气穴，对锥阀阀芯形状进行了改进，选择了几种不同的阀芯形状，并分别进行了气穴流场分析和比较，从而获得了优化的阀芯结构形状和尺寸。

The effects of inlet velocity, outlet pressure, opening size as well as cone angle on cavitation intensity in the water hydraulic poppet valve were numerically investigated.

分析了进口流速，出口压力，阀口开度和阀芯锥角对纯水液压锥阀阀口气穴强度的影响。

Furthermore, The effects of inlet velocity, outlet pressure, opening size as well as cone angle on cavitation intensity in the poppet valve, ball valve and water hydraulic poppet valve were numerically investigated.

进一步分析了锥阀，球阀和纯水液压锥阀阀口几何参数与边界条件对气穴的影响。

Simulation results show that throttle orifices based on special structure can effectively restrain cavitation at same

最后对全文做了总结，对今后该课题的进一步开展作了一些展望。

The mechanism of vaporization , cavitation and water-hammer of drill fluid occurring on the suction stroke of drill pump is investigated.

对钻井泵吸入过程中钻井液产生汽化、汽蚀与水击现象的机理进行了探讨。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷