本文分析了空化噪声的基本特性。
The essential character of cavitation noise has been analysed.
空化理论不属于水斗式水轮机。
并用超声空化理论解释实验结果。
阀下游的压力升高，压破气泡的过程即空化过程。
Downstream of the valve's pressure increases, the cavitation bubble crush process process.
漩涡空化一直是空化空蚀研究中的一个重要问题。
Vortex cavitation has been an important problem in cavitation researches.
而在另外一些情况下，则可有控制地利用空化机制。
Only in some special cases the cavitation mechanism could be used under control.
超声作用的物理机制有热机制、机械机制和空化机制。
The physical mechanisms of ultrasound are thermal mechanism, mechanical mechanism and cavitation mechanism.
本文对物体空化噪声与运动速度之间的相互关系进行了分忻。
The present paper analyzes the relationship between the body speed and THS cavitation noise.
初步探讨了超声清洗空化噪声对大白鼠学习记忆功能的影响。
To study the effect of cavitation noise radiated from ultrasonic cleaning tank on learning and memory in rats.
扼要地介绍了一套最近研制成功的高速水流空化噪声测试系统。
It is briefly introduced that a set of high flow cavitation noise measuring system has been used recently.
本文首次采用碘释放法发现双束脉冲超声辐照的空化产率增强效应。
This treatise first reveals the enhancement of cavitation yield of bi beam ultrasound irradiation.
采用完全空化模型，对液氧流经弯管中时的空化现象进行了数值模拟。
Numerical simulation was performed to investigate the cavitation phenomenon of liquid oxygen through an elbow pipe.
流场中具有绝对压强小于或等于汽化压强的区域是射流空化的必要条件；
The prerequisite for cavitation is that there exists an area in which absolute pressure is lower than or equal to vaporization pressure.
在由孔板产生的水力空化条件下对KI水溶液分解反应进行了实验研究。
The hydrodynamic cavitation generated through an orifice plate is used to decompose aqueous solution of KI in this work.
并从超声的机械振动效应、声空化效应等方面分析了声化学的作用机理。
The mechanism of sonochemical actions were discussed in view of mechanical fluctuation and cavitation effect of ultrasound.
随通气空化数的减小，超空泡航行体尾部沾湿区域阻力系数也逐渐减小。
The drag coefficient of the aft wetted area of vehicle also decreased with the ventilated cavitation number.
随着三空化泡初始半径的减小，三空化泡对刚性壁面的压强作用逐渐增强。
Along with radius of three cavitations bubbles reducing, the intensity of pressure to rigid wall is strengthened gradually.
螺旋桨空泡会降低螺旋桨性能，产生空化剥蚀和噪声，从而导致船体振动。
Propeller cavitation degrades propeller performance, erodes blade surfaces, produces noise, and causes vibration on the ship hull.
随着超声空化在医学中的应用越来越广泛，其安全性越来越受到人们的关心。
The more widely the ultrasound cavitation was used, the more its safety was paid attention to.
在流速恒定情况下，随通气率的增大，通气空化数逐渐减小，呈指数规律衰减。
The ventilated cavitation number decreased with the ventilation flow rate by exponential law at constant velocity.
结果表明，不同尺度的气核具有不同的空化起始条件及不同的发育和溃灭过程。
The results show that there are different inception conditions growth and collapse processes of bubble for the gas nucleus with different scale.
声空化是声化学反应的主动力，对声化学产额的研究将能更好地利用声化学技术。
Sound cavitation is the driving force of sonochemical reactions. Investigation on sonochemical yield is useful in application of sonochemistry.
基于空泡动力学及概率统计理论，本文建议了一种预测绕流体初生空化数的方法。
Based on the bubble dynamics and the probability theory, a method for estimating the incipient cavitation number is suggested.
数值模拟结果显示，表面张力对固壁附近小空化气泡溃灭特性的影响是非常显著的。
The numerical results show that for a small cavitation bubble near a rigid wall effects of surface tension on its collapsing behavior are very significant.
迄今为止，凡在清水条件下水轮机安装高程都是以限制空蚀条件的空化数来确定的。
UP to now, the setting height of the turbine in clear water has been determined by the cavitation number which limits the cavitation conditions.
高水头、大流量泄洪洞内高速水流问题主要问题之一是水流空化引起过流表面空蚀。
One of the main problems of spillway tunnel with large discharge and high velocity flow is the cavitation damage.
其中，水力空化现象发生在很多场合，例如在有管径急剧变化的管道中和水力机械中。
Hydrodynamic cavitation occurs in many cases, such as in piping with diameter suddenly changed, and in waterpower mechanism.
为了扩大其适用范围，对阀门底缘空化特性及改善措施进行综合研究是很有十分重要的。
To widen the range of the plane gates, it is very much important for plane gates to study hemline cavitation and solving measure.
本文通过减压模型试验对积石峡水电站中孔泄洪洞平面工作闸门槽的空化问题进行了研究。
By means of depression model test, this paper researches cavitation characteristics of service gate slots for middle outlet works of Jishixia hydropower station.
本文通过减压模型试验对积石峡水电站中孔泄洪洞平面工作闸门槽的空化问题进行了研究。
By means of depression model test, this paper researches cavitation characteristics of service gate slots for middle outlet works of Jishixia hydropower station.
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