查询词典 unsteady

2Theory of pulse combustion was analyzed and its mechanism were discussed with planewave transferring theory in the thesis.Models of pulse combustor were reviewed and analyzed.Theone-dimensional unsteady nonlinear model of pulse combustor was simplified with lineal method.The phase relation between pulse pressure and combustion heat discharge which may prompt ordamp pulse combustion process were discussed.

对脉动燃烧理论进行了分析探讨，从平面波的传递理论出发，分析了脉动燃烧的机理；在归纳综合现有的脉动燃烧器理论模型的基础上，采用线性化分析方法，对一维非线性脉动燃烧器理论模型进行了简化，并定性分析了脉动压力与燃烧放热之间的相位关系对脉动燃烧过程的激励和阻尼作用。

For high-speed sliding-barge dolphin unsteady movement and kinetic theory forecast problem in the wave, because its kinetic differential coefficient equation is complicated furthermore comprises many presumptions and premises, it meads to be calculated by a large-scale computer.

针对高速滑行艇海豚不安定运动以及在波浪中的运动理论预测问题，因其运动微分方程式繁杂而且有许多假设和前提，需要在大型计算机上计算。

A few hours later, after a visit to the Buddha bar, she emerged looking unsteady on her feet and had to be propped up by a pair of minders.

几个小时后，在Buddha bar的访问期间，她步态蹒跚，不得不由陪同人员扶着。

A few hours later, after a visit to the Buddha bar, she emerged looking unsteady on her feet and had to be propped up by a pair of minders.

几个小时后，在Buddha bar的访问期间，她步态蹒跚，不得不由陪同人员扶著。

Evidence suggests that 1 under more stable stratification, the basic flow, if moving faster at low and high levels (particularly in the presence of jets there), allows a resulting meso-β unsteady wave to propagate eastward with respect to basic flow and even at greater velocity compared with it; 2 vertical windspeed shear of basic flow causes instabilities of the TWT perturbation; 3 considering the second derivative of basic-flow wind with respect to z (denoted by zz≠ 0 which is simply given as β* hereafter) the expression for the phase velocity of vortex Rossby wave is obtained, which is unidirectional in propagation with respect to basic flow; 4 VRoW has its physical origin from β*, i.e., from z-varying heterogeneities of y-direction averaged vorticity of the basic flow field; 5 VRoW phase velocity is associated with zonal wave number k, its energy is dispersive and the group velocity exists in the x direction; 6 when windspeed meets the condition of β*, TWT disturbance instability may be that of mixed VRoW and gravity wave; 7 if basic flow is subject to linear shear but does not meet the condition of β*, the TWT instability is that of inertia-gravity wave.

在大气层结比较稳定的情况下，如果基本气流在低层和高层较大(有可能存在低空急流和高空急流)，此时产生的β中尺度不稳定扰动相对于基流向东传播，甚至于快速向东传播。基本气流在垂直方向上的风速切变对于中尺度横波型的扰动起着不稳定的作用。如果考虑基流的二次切变，可以得到涡旋Rossby波的相速度表达式，涡旋Rossby波相对于基本气流是单向传播的。涡旋Rossby波产生的物理根源是基本流场的风速二次切变，亦即基本流场y方向的平均涡度在空间z方向上的不均匀所致。涡旋Rossby波的相速度与纬向波数也有关，它的能量是频散的，其在纬向x方向也存在群速度。在基本流场的风速存在二次切变时，横波型不稳定可能是混合的涡旋Rossby重力波的不稳定；而在基本流场的风速仅仅存在线性切变，不存在二次切变时，横波型扰动的不稳定则是重力惯性波的不稳定。

Whereas the seismic thermal lithosphere is about 150km thick, which means the Tarim lithosphere is not steady and became thinner. In this paper, writers analyzed the Tarim lithosphere thinning mechanism based on the tectonic thermal evolution quantitative method, and discussed three possibilities:the hotter India asthenosphere intruded under the Tarim lithosphere and made the Tarim lithosphere became unsteady;the bottom of Tarim lithosphere is heated by friction of the atheonosphere flow and washed off by the hot asthenosphere; the Xizang lithosphere delamination induced the convection, and the upflowing mentle heated the bottom of the Tarim lithosphere and make it enthinning.

本文利用构造热演化方法对塔里木岩石圈减薄的热演化过程进行了定量分析，探讨了塔里木盆地岩石圈减薄可能的三种机制：印度板块与欧亚板块碰撞后青藏高原岩石圈底部的软流圈较塔里木盆地岩石圈底部的软流圈的温度要高，青藏高原的软流圈地幔向塔里木盆地岩石圈底部侵入形成的热扰动使得塔里木盆地岩石圈底部的温度升高；塔里木岩石圈与其下流动的软流圈的摩擦剪切生热导致其岩石圈地幔底部温度升高，使得岩石圈底部发生热侵蚀，从而使得与软流圈接触的岩石圈地幔不断地加入到软流圈地幔；在塔里木盆地岩石圈的下部，青藏高原的岩石圈在该处发生了拆沉，从而诱发的软流圈地幔对流，上升的软流圈地幔流使得岩石圈地幔的温度升高而熔融，成为软流圈地幔。

Based on unsteady N-S equation of three dimensional and compressible viscous fluid, the aerodynamic performance for the fast special container flat wagon at the speed of 160 km/h was calculated numerically by adopting the technology named slippage grid.

摘 要：利用三维、可压、非定常N-S方程，采用滑移网格技术对我国正在研制的160 km/h快速集装箱专用平车与动车组分别在明线和隧道内会车时的气动性能进行数值模拟。

A stout, middle-aged man, with enormous owl-eyed spectacles, was sitting somewhat drunk on the edge of a great table, staring with unsteady concentration at the shelves of books.

一个矮矮胖胖的中年男人，戴着老大的一副猫头鹰式眼镜，正醉醺醺地坐在一张大桌子的边上，迷迷糊糊目不转睛地看着书架上一排排的书。

Unsteady numerical simulation and analysis of the flow fluctuation in the Roots blower;2. The characteristics of gas solid jet are researched and the characteristics of gas\|solid jet fluctuation are proved by means of Rescaled Range Analysis.

流化床内颗粒的混合对流化床内颗粒运行以及燃烧有重要的影响，因此，利用图像处理技术在二维流化床试验装置上研究了水煤膏的混合过程，分析了气固两相射流的流动特性，利用R/S分析方法表明了气固两相射流的脉动特性。

Water storage pit irrigation ; unsteady infiltration head ; soil moisture movement characteristic ; 3-D infiltration numerical model of layer homogenous soil ; topsoil porosity variance

国家自然科学基金；山西省自然科学基金蓄水坑灌；非恒定入渗水头；土壤水分运动特性；层状均质土三维入渗模型；表层土壤孔隙度变化

We will see more and more activist government policies that distinguish economic activities according to the nationality of the actors.

我们将看到越来越多激进的政府政策，这些政策根据企业的国籍来区分经济活动。

If we can prove the independence of an axiomatic system, then we can guarantee the conciseness of this system, ie.

如果能够证明某个一阶谓词系统的独立性，那么就能够保证该系统的建立是精炼的，即没有任何一条公理或推理规则是多余的。