黑子半影具有旋涡结构。
这种旋涡结构可能是由于A本影的逆时针自旋运动造成的。
The formation of this spiral structure may be caused by the anti-clockwise spin of umbra "A".
这个质子活动区的主要形态特点是前导大黑子A的半影纤维的顺时针旋涡结构。
The main morphological feature of this proton active region is the clockwise spiral structure of the penumbral filaments of the large preceding spot "A".
采用离散涡方法模拟了两种不同形状哨嘴的喷嘴出口流场旋涡结构和压力分布。
The discrete vortex method was adopted to simulate and analyze the vortex structure and pressure distribution of the flow field at the nozzle exit.
分叉口左尖点附近的流场中出现了复杂的旋涡结构、未反应区及激波与旋涡作用。
Complex structures of vortices, the unreacted region, and shock-vortex interaction are observed in flow field around the left corner.
也许旋涡星系m51原本是一个巨大的星系，直径超过6万光年，有显尔易见的旋涡结构。
Perhaps the original spiral nebula, M51 is a large galaxy, over 60, 000 light-years across, with a readily apparent spiral structure.
计算获得了分离流、二次流和多尺度旋涡结构，表明SST模型能很好地预测尾水管内的湍流流动。
Finally, separation flow, secondary flow and multi-scale eddy structure are simulated, it indicates that SST model can give a good prediction of turbulence in the draft tube.
文中分析了两种工况下流场中的旋涡结构的特点和突起物上、下游及顶部旋涡的运动特性和细部特征。
The vortex structures, the movement performances and detail characteristics of vortex in upstream, downstream and top of obstacle under the two cases are analyzed.
本文分析了各种情况下旋涡结构特点、讨论了与时均流场和自由剪切层的区别，还给出了二维后向台阶流的拓扑结构。
The vortex structures under some instances are analyzed. The difference with time-mean velocity field and free shear layer is discussed, and a reasonable description of the topological...
在对10倍于原型的试件进行的水流模拟试验中，未观察到异常的旋涡结构，在泄漏量测量中也未发现类似的“反常”现象。
In the experiments on the labyrinth models 10 times greater than the prototypes, no unusual vortex structure was found, and no abnormal phenomenon happened either from the leakage measurements.
实验结果表明，采用非光滑叶片改变了叶栅出口旋涡结构及流动分布，使叶栅出口的流场趋于均匀，叶片可以随更大的负荷。
The experiment results show that using non-smooth blades can change the exit streamwise vortex structures. The exit flow fields tend to well-distributed. The overall blade losses are reduced.
星系晕本身又被暗淡的窄形结构缠绕，显示大约100亿年前一个卫星系被这个大的旋涡星系瓦解后残留物的混合与分散。
The halo itself is laced with faint, narrow structures, and could represent the mixed and spread out debris from a satellite galaxy disrupted by the larger spiral some 10 billion years ago.
这个圆盘就是我们的星系，银河系，带着旋涡的结构。
This flat circular disk is our own Galaxy, the Milky Way, with its spiral structure.
本文叙述了旋涡发生体和传感器的结构，详细讨论了电子检测电路。
The paper described the structures of vortex shedding and sensor, and the electronic detection circuits are also discussed in detail.
最近十几年来，银河系已被确认为是一个棒旋星系，而不是无棒结构的普通旋涡星系。
Therefore, our Milky Way should be morphologically catalogued as a barred spiral galaxy instead of a normal spiral one.
第一级工作轮为离心式，第二级工作轮为旋涡式的两级悬臂式结构。
The first level work for centrifugal, the second round of the work for the spiral type wheel two-level cantilever structure.
数值模拟清晰地显示了排气缸通道内的流场结构是以各种旋涡为主要特征，包括通道涡、分离涡和端壁涡等。
The computational results revealed a complex vortex system within the casing model, including a passage vortex, a separation vortex and an endwall vortex.
研究了双钝体旋涡脱离的流体动力学特性以及利用双钝体增强流体振动的最佳组合结构。
The dynamics characteristics of dual bluff body vortex and the best structure of dual bluff body vortex improving fluid oscillation are studied.
天体中，从众多的硕大的旋涡状星云，到坠落于地球上的微小的陨砂、陨尘，普遍存在着螺旋状的结构形态。
There are commonly the helical structures in the celestial body from many gigantic whirl nebulae to small meteoric stone and dust falling to the Earth.
天文学家推断，M51的旋涡状结构可能由它与邻近小型星系的相互引力作用而形成。
Astronomers speculate that M51's spiral structure is primarily due to its gravitational interaction with a neighboring smaller galaxy.
旋涡气泵结构紧凑，体积小，重量轻，不需变速装置，除轴承外其它部位没有直接接触磨擦，噪音低，送出的气源无水无油。
Swirl pump is compact, light weighted and no speed-adjusting device needed, no friction except bearer, low noise, no water and no oil in the output air.
利用FAM激光粒度测量仪，以水为工质对不同结构旋涡压力喷嘴在不同压力条件下的雾化特性进行了实验研究。
The atomization characteristics of different eddy pressure nozzles were investigated using FAM laser particle size analyzer with water as working fluid in different pressure conditions.
本文研究了结构在强声和旋涡双重作用下的结构诱发振动问题。
The paper makes a study of the induced vibration in the structure under the effect given by macrosonic sound and the vortex.
通过对PLW- 8型旋涡式屏蔽泵的设计及试验研究，介绍了该类型泵的水力设计及结构设计，总结了设计要领，并将一些重要参数对泵性能的影响做了探索。
Through the design and experimental research of PLW-8 peripheral canned pump, the hydraulic design and structural design of this type of pump are introduced and the design main points are summarized.
论文第五章介绍了旋进旋涡流量计的有理和结构，阐述该流量计的经典理论，分析了经典理论的局限性。
The fifth chapter at first generally introduced principle and structure of vortex precession flowmeter, expanded on the classical theory of vortex precession flowmeter, and discussed its limits.
平面混合涡结构的演化和旋涡相互作用的研究，是湍流拟序结构研究中的两个重要方面。
Vortex structure in shear layer and the interaction among vortices are two important aspect of coherent structure …
平面混合涡结构的演化和旋涡相互作用的研究，是湍流拟序结构研究中的两个重要方面。
Vortex structure in shear layer and the interaction among vortices are two important aspect of coherent structure …
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