并确定了路、圏和完全多部图的控制临界数的精确值。
The best possible upper bound of a graph is determined, the exact values are also determined for path, cycle and complete multipart graph.
流量的福劳德数是流动状态的影响因素,即超临界流或亚临界流。
The Froude number of flow is the factor of flow status: supercritical flow or subcritical flow.
现在存有一大未知数,即到达导致气候进一步变暖的危险临界点时的情形——比如储存在北极甲烷水合物被释放出来。
One big unknown is the stage at which dangerous tipping points would be reached that lead to further warming - for example the release of methane hydrate deposits in the Arctic.
用户临界值策略保证用户能够并发地访问应用程序,并发量最高上限为提供商的用户授权规定的限制数。
User threshold policy ensures users can access concurrently the application up to the limit specified in a user license from the provider.
重整化群方法是研究相变的临界现象最有力的工具,它是一种由理论求得分形维数的方法。
Renormalization group method which calculates fractal dimension theoretically is the most useful tool when we study critical phenomena of phase transition.
而时序模型适用性检验的核心问题是模型阶数确定。本文从F检验出发,以aic为基础,推导出模型定阶f检验临界值。
Based upon AIC rule, the critical value of F-test has been developed, the order of model simply determined by it.
热空气可使之在超过临界马赫数之前达到更快的速度。
The hot air permitted higher speeds before the critical Mach number was exceeded.
引进了有效数密度的概念,对玻色-爱因斯坦凝聚(BEC)在球谐势阱中理想玻色气体的临界温度进行探讨。
The paper introduces the concept of significant density and explores the critical temperature of Bose-Einstein condense(BEC) in the ball harmony potential well in the ideal Bose gas.
由斯托克斯准数为1/16导出的临界流速值,只有在纯理论研究的计算上才具有意义;
The critical velocity of flow gotten by Stokes'number 1/16 only had its significance in theory.
还研究了压力梯度对临界雷诺数的影响,探讨了不同压力场对流动稳定性作用的规律性。
The effect of the pressure gradient on critical Reynolds number is also displayed and the influence rule of the different pressure fields on the flow stability is exploited.
本文分析了降液膜高雷诺数区域换热系数随液膜长度变化趋势,引出临界长度的概念。
A critical length concept is introduced to describe the heat transfer performance of thin film flows with high Reynolds number in this investigation.
提出计算流化压降的修正式和临界流化速度的准数关联式,为进一步研究此设备的干燥性能打下基础。
The modified correlations of dimensionless groups for calculating both-Ap and Um are presented as the basis for further study on the drying performance of the dryer.
进而由此揭示了临界概率和相关长度指数随维数增大而减小的变化规律。
Then, a law is brought forward that critical probability and correlative length exponent values decrease with the increase in the dimensionality of a system.
研究了克努森数不是特别大的微流动的稳定性,这种流动处于N-S方程适用的临界处。
Modified N-S equations have been used to study the stability of microflow with a not-too-large Knudsen number.
研究结果为亚临界雷诺数范围内热交换器管束的复杂流体诱导振动等问题提供了一种可能的计算方法。
The proposed method enables to simulate complex flow induced vibration occurring in heat exchanger tube bundles at sub-critical Reynolds number.
通过用虚假临界点法计算嵌入维数可以使小数据量法更加完善。
The small-data method is improved by false nearest neighbor method calculating embedding dimension.
结果表明,系统的临界点不仅与空间维数有关,还与晶格格点的配位数有关;
The result shows that, the critical point of the Gauss model depends not only on the spatial dimension of the system, but also on the coordination number of the site.
该模型具有简便、快捷以及能够对亚临界雷诺数下的流体诱导振动问题进行计算等优点,为多圆柱流体诱导振动问题提供了一种新的计算模型。
The proposed model is expected to provide a new method to evaluate the flow induced vibration of a large number of flexible tube bundles with a relatively simple computing task.
可燃气体初始温度和压力对起爆临界马赫数都有影响,但是初始温度的影响大得多。
The critical Mach number is influenced by the initial pressure and temperature, but the temperature is the main factor.
长期以来,人们一直用临界流速或临界佛汝德数的准则来确定冰塞的演变。
The critical velocity, or critical Froude number criterion has long been accepted as a means of determining frazil jam profiles.
详细分析了管流湍流人口长度的影响因素,提出以临界雷诺数为基础变量的新湍流入口长度经验公式。
The factors on the turbulent entrance length were analysed, based on the variable Recr, a new empirical formula was developed for the turbulent entrance length in a pipe flow.
剪切力对临界波速的影响在不同雷诺数下也有所不同。
Therefore, the effect of interfacial shear on critical wave velocity is clearly different under different Reynolds number.
针对各种温度、压力下,马赫数2.5流场中超临界煤油的超声速燃烧性能进行了实验研究。
Characteristics of supersonic combustion by injecting supercritical kerosene fuel into a Mach 2.5 crossflow at various preheat temperatures and pressures were investigated experimentally.
利用外推法得到的该表面活性剂临界胶束聚集数约为亲油基同碳数的CTAB临界胶束聚集数的一半。
The critical micellar aggregation Numbers obtained by extrapolation method are half of the CTAB's (cetyltrimethylammonium bromide) which is hydrophobic with the same carbon number.
本文给出了关于亚临界雷诺数二维圆柱绕流动态特性的实验结果。
The experimental study of the dynamic characteristics of flow past a two-dimensional circular cylinder is described.
本文对竖直圆管中超临界压力二氧化碳在低雷诺数条件下的对流换热进行了实验研究和数值模拟。
Convection heat transfer of CO2 at supercritical pressures in a vertical tube at low re was investigated experimentally and numerically.
本文对竖直圆管中超临界压力二氧化碳在低雷诺数条件下的对流换热进行了实验研究和数值模拟。
Convection heat transfer of CO2 at supercritical pressures in a vertical tube at low re was investigated experimentally and numerically.
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