查询词典 critical mass

Based on these ideas, we suggest a generalized critical angle equation including mass effects.

依据上述观点，我们提出了一个包含经典公式与质量效应公式的广义沟道临界角公式。

This work employs operator-splitting method / finite element method to study dynamic performance and the stability of liquid-lubricated herringbone grooved journal bearing with micro-polar lubricants. Load capacity, friction resistance, stiffness/damping coefficients and critical rotor mass were investigated.

本文采用算子分裂/有限元法计算微极性流体润滑剂的螺旋槽径向轴承承载力、粘性阻力、润滑油膜刚度系数和阻尼系数等特征量，研究轴承的动力特性和稳定性问题。

Wind-induced vibration Fluid-structure interaction Added mass Aerodynamic damping Critical wind velocity

风致振动；流固耦合作用；附加质量；气动阻尼；临界风速

The course combines historical and critical analysis of the mass media .

这门课程结合了对大众媒体的历史和评论性分析。

In this part, the characteristics of transient responses of flexible rotor systems with arbitrarily distributed mass on isotropic or anisotropic supports passing through several critical speeds seguencially are examined. Here, the current knowledge of rotor dynamics on the eigenproblem of damped free whirling vibration, the generaliged damped mode theary, the transient forced vibration and so on combined with KBM asymptotic method in the nonlinear vibration theory is employed and extended.

作者综合运用并引伸推广转子动力学关于阻尼自由回旋振动的特征问题、广义阻尼模态理论、瞬态强廹振动等現代理论和方法，结合非线性振动理论中的KBM渐近法，提出自己独創見解和覌点，成功地建立起正回旋和逆回旋两种情况下转子通过临界点的瞬态振动一阶微分方程组，可以在临界点的邻域内从事方程的数值积分计算。

The apparent degradation reaction activity energy of PET and PC are evaluated to be 27. 19kJ. mol〓 and 35. 75kJ. mol〓 in system noncritical region respectively. The mass transfer and scatter, which are the controlling factors of degradation in system noncritical region, change into chemical reaction in system critical region, where the activity energy of PET and PC are evaluated to be 89. 79kJ. mol〓 and 80.61kJ. mol〓 respectively.

在系统的非临界区域，PET、PC的降解为液固相反应，反应速率很低，其降解反应表观活化能分别为为27.19KJ.mol〓和35.75KJ.mol〓，为传质、扩散控制；在系统的临界区域，PET、PC的降解为液态均相反应，降解反应速率显著提高，其降解反应表观活化能分别为89.79KJ.mol〓和80.61KJ.mol〓，为化学反应控制。

A critical concentrations of initial water mist mass fraction required for extinguishment have been achieved for the various conditions of flame spread phenomenon.

本文获得了在不同条件下火焰蔓延情况下，灭火需要的细水雾质量分率的关键浓度。

The critical ingredient that was lacking was a genuine Marxist party, rooted among workers as well as students, which could have emerged from underground conditions to fructify the mass movement with a clear programme and correct tactics.

但问题是在于当时缺乏实现这一目标的至关重要的因素，也就是缺乏一个真正的、深深扎根于工人与学生中的、能在每一个关键的转折点从下而上地以清晰的纲领、战术和口号去引导群众运动的马克思主义政党。

Among the famous novelists of the time were the critical realists like Charles Dickens, William Makepeace Thackeray, Charlotte Bronte, Emily Bronte, Mrs. Gaskell (1810-1865) and Anthony Trollope (1815-1882), etc. While sticking to the principle of faithful resentation of the eighteenth-century realist novel, they carried their duty forward to the criticism of the society and the defence of the mass.

其中著名小说家的时间是狄更斯批判现实主义者一样，威廉Makepeace异同、勃朗特、勃朗特、斯凯尔夫人(1810至1865年)和安东尼trollope(1815至1882年)等等，既坚持原则，忠实模型中的十八世纪的写实小说他们携带着自己的职责，社会批判和辩护的质量。

Later, the People's Army played a critical role in ensuring the mass general strike.

之后，人民军队又在确保人民群众大罢工方面发挥了重要作用。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。