利用数值方法研究了某低速轴流孤立压气机转子中非定常叶顶间隙流的流动特征和频率特性。
Numerical methods were utilized to investigate the time-dependent flow patterns and the frequency characteristics of unsteady tip clearance flow in an axial-flow low-speed isolated compressor rotor.
顽强的种类包括醉蝶花属植物，橡胶植物（叶厚而有光泽,常作室内盆栽）和蛇型植物，以及石柑属，芦荟和和平百合。
Hardy varieties include spider, rubber, and snake plants, and pothos, aloe vera, and peace lilies.
下游静叶干涉增加了动叶顶部间隙流的非定常波动强度和泄漏损失。
Downstream rotor-stator interaction increases the unsteady fluctuating intensities of the rotor tip clearance flow and the tip leakage loss.
计算结果表明，振荡叶栅非定常流场的压力响应在叶栅前缘较大。
The results show that the unsteady pressure response is large in the oscillating cascade leading edge.
作为算例用它计算了后掠超音速平板叶栅由于振动引起的非定常空气动力功。
Program and unsteady aerodynamic work caused by oscillation of sweepback supersonic plate cascade were provided as an example of its application.
本文提出了用小扰动欧拉振幅方程求解振动叶栅非定常流场的方法。
In this paper, the Euler amplitude equation is developed to obtain the unsteady flow field in vibrating cascades.
利用本文的方法，分别计算了跨声速叶栅流动和工程中一类复杂非定常轴对称跨声速流动。
The new method is used to study transonic flow in cascades and one kind of complex unsteady transonic axisymmetric flow in arc breaker.
忍冬一种忍冬属的灌木或藤本植物，有对生叶，芳香的常成对的管状花和小浆果。
Any of various shrubs or vines of the genus Lonicera, having opposite leaves, fragrant, usually paired tubular flowers, and small berries.
叶肉没有海绵组织和栅栏组织的分化，但叶尖部和叶中部中脉附近的叶肉细胞常伸长，类似栅栏组织细胞。
The mesophyll is not differentiated into spongy and palisade tissues, but mesophyll near midrib in tip and middle parts of leaf is often lengthened to appear as palisade-liked tissue.
对于同一叶栅进行了定常流场的计算与分析，比较了平面叶栅在不同进口马赫数、不同攻角下的定常流场。
Steady flow fields are also calculated to analyze flow field structure for the same cascade with different inlet Mach Numbers and incidence Angle.
采用定常流和非定常流计算方法研究了各种动静叶稠度组合对轴流压缩机性能的影响。
In this paper, the effects of solidity of rotor-stator cascades on axial-flow compressor performance are investigated with steady and unsteady flow calculation.
常位于右叶，90%为单发。
利用数值计算的方法研究了非定常尾迹对动叶气膜冷却效率的影响。
Numerical calculations were performed to investigate the effects of unsteady wakes on film cooling.
此外上游静子尾迹以及动叶尾缘出口膨胀波等也是产生转子叶片表面非定常力的因素。
In addition, the wake interaction of upstream blade row and the expansion wave at rotor exit also cause an unsteady force acting on the downstream rotor blade surface.
文中给出了VKI透平叶栅内的定常流结果和1.5级透平叶栅内的非定常数值结果。
Numerical results of steady flow in the VKI gas turbine cascade and unsteady flow in a 1.5 stage steam turbine are presented.
近年来，人们发现压气机叶顶间隙流并非始终处于定常状态，在某些流动条件下，它会产生明显的非定常波动，并影响压气机的总性能。
Recently, the unsteady characteristics of tip clearance flow, which appears in some flow conditions, was discovered and its influence to the compressor performance was recognized.
本文对某亚音轴流压气机的中间三排叶片进行定常与非定常数值模拟，分析在不同的动叶叶顶间隙和静叶气封间隙组合下压气机的流动特性。
One and a half stages of a subsonic compressor were simulated with steady and unsteady calculation, comparing the performance with different combination of tip leakage and seal cavity.
阐述了在环形扩压叶栅内利用非定常激励减少分离区损失的实验研究成果。
This paper presents the results of the experimental investigation on the effects of internal acoustic excitation on enhancing performance of the annular cascade.
针对某静止环形叶栅的激励实验工作，相应的对扩压叶栅进行了不同气流攻角和激励频率的非定常粘性计算与流场分析。
In regard to the excitation experiments, time-Accurate numerical stimulation was carried out to investigate the upstream disturbance frequency effect under different incidence in an annular cascade.
一种北美落叶树(美洲榆)，有双齿叶和双翼果，主要作为观赏性浓荫树，但常患荷兰榆树病而坏死。
A North American deciduous tree (Ulmus Americana) having double serrate leaves and winged fruits. It is grown chiefly as an ornamental shade tree but often dies from Dutch elm disease.
瓣膜狭窄多为二瓣叶畸形且常合并其他心血管畸形。
Valvar stenosis is most frequently associated with a bicuspid valve or other cardiovascular malformation.
叶上表皮细胞常呈乳突状。
北美东部产的一种普通水生植物，飘浮叶长圆形至倒卵形，基部常具缺刻，花白色，有黄斑点。
Common aquatic plant of eastern North America having floating and submerged leaves and white yellow-spotted flowers.
对各列叶栅的非定常气动力和气动力矩进行频谱分析，探讨叶列间的非定常气动干扰。
Through spectrum analysis of the unsteady aerodynamic forces and moments of each blade cascade, the unsteady aerodynamic interferences between blades were discussed.
此外，通过对振荡叶栅非定常流场结构的研究，发现了叶片吸力面气流分离与叶片振动之间的耦合关系。
Through studying the structure of the unsteady flow field in vibrating cascades, the coupling relationship between flow separation on the suction surface and blade vibration is revealed.
本文给出了一个模拟叶栅内准三维定常和非定常粘性流动的数值方法。
A numerical method for the simulation of quasi-3D steady and unsteady viscous flows in cascades has been presented.
本文首先研究气固非耦合条件下的振动叶栅内二维非定常粘性流动。
First, a 2-d unsteady viscous flow in a vibrating cascade is investigated under flow-structure uncoupled conditions.
乌鲁木齐市彩叶树种共有17科46种，其中秋色叶树种比例最大（39种，占总数的84.78%），常色叶（4种）和春秋色叶树种类（3种）很少。
There are 46 kinds of colored-leaf trees in Urumqi city which belong to 17 family, among which the autumn colored-leaf trees account for maximum proportion(39 species, accounting for 84.78% of total);
乌鲁木齐市彩叶树种共有17科46种，其中秋色叶树种比例最大（39种，占总数的84.78%），常色叶（4种）和春秋色叶树种类（3种）很少。
There are 46 kinds of colored-leaf trees in Urumqi city which belong to 17 family, among which the autumn colored-leaf trees account for maximum proportion(39 species, accounting for 84.78% of total);
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