schlieren

简明释义

英[ˈʃlɪərən]美[ˈʃlɪrən]

n. 纹影；（火成岩的）异离体

英英释义

单词用法

同义词

反义词

例句

1.The threaded texture and schlieren texture of nematic phase can be observed.

在液晶态可以观察到向列相的丝状织构和纹影织构。

2.Using the moire - schlieren method symmetric and asymmetric flow fields density distributions of underexpended free jets of air from circular and square nozzles have been measured.

本文应用莫尔条纹法测出了从图形和方形喷嘴里吹出的不完全膨胀气流的密度分布。

3.The techniques of schlieren is a conventional method for observing anddisplaying the wind-tunnel phenomena.

在风洞气流场的观察和显示中，纹影法是最常用的方法。

4.By using the combination facility, many schlieren photographs of the axisymmetrical dissemination, breakup and atomization of the liquid under the action of axial airflow were obtained.

通过在此设备上的一系列实验，获得了在不同压力和不同气流速度下液体轴对称抛撒的近场纹影照片。

5.Compared with the images taken by direct photography, the earlier generation of flame, the broader flame contour and the transformation of flame configuration could be observed from schlieren results.

通过对比，纹影图像比直接摄影图像能更早地观察到火焰的产生，火焰轮廓更大，能够反应火焰的变化形态。

6.The rainbow schlieren can be widely used in a lot of typical flow field as a non-invaded optical measurement. It can measure the density and density-grads quantitatively.

彩虹纹影定量测量技术作为一种光学非侵流场定量测量技术在诸多典型流场的定量测量中有着广阔的应用前景，可用于定量测量流场的密度梯度和密度场。

7.Using high speed schlieren photographs the microstructure of flame front surface in gas explosion was studied from the microscopic view.

通过高速纹影图像从细观角度详细研究了不同传播条件下瓦斯爆炸火焰前锋的细微结构。

8.The liquid crystal results are compared with schlieren photo and oil film method, confirming that it is an…

液晶显示结果与纹影实验照片和油膜方法进行比较，证实了它是一种非常有效的表面流动显示工具。

9.The spray shape and droplet characteristics were measured by means of Laser schlieren high speed photography and Malvern Laser Diffraction method.

采用激光纹影高速摄影和激光衍射方法进行喷雾结构特性和粒度特性测量。

10.The artist captured the beauty of schlieren 流动线 effects in her painting of a sunset over the ocean.

这位艺术家在她描绘海洋日落的画作中捕捉到了schlieren 流动线 效果的美。

11.In the lab, we used a schlieren 流动线 system to observe the behavior of gas flows.

在实验室里，我们使用了一个schlieren 流动线 系统来观察气体流动的行为。

12.The scientist observed the schlieren 流动线 patterns in the heated air above the flame.

科学家观察到火焰上方热空气中的schlieren 流动线 图案。

13.Using a schlieren 流动线 setup, they were able to visualize the shock waves produced by the supersonic jet.

通过使用schlieren 流动线 设备，他们能够可视化超音速喷气机产生的冲击波。

14.The schlieren 流动线 technique is essential for studying fluid dynamics in engineering.

在工程中，schlieren 流动线 技术对于研究流体动力学至关重要。

作文

The phenomenon of schlieren is a fascinating optical effect that occurs when there are variations in the refractive index of a medium, typically air. This effect can be observed in various situations, such as when light passes through heated air or when it travels through a medium with different densities. The term schlieren is derived from the German word meaning 'streaks' or 'lines', which aptly describes the visual patterns that emerge during this process. In essence, schlieren imaging is a technique used to visualize changes in density within transparent media, making it an invaluable tool in both scientific research and industrial applications.One of the most common examples of schlieren can be seen on a hot day when heat waves distort the view of distant objects. As the hot air rises from the ground, it creates a gradient of temperature and density, causing the light to bend and creating a shimmering effect. This is not only visually striking but also scientifically significant, as it illustrates the principles of fluid dynamics and thermodynamics at play in our environment.In scientific research, schlieren techniques are often employed to study gas flows, particularly in aerodynamics. By using a schlieren setup, researchers can visualize airflow around objects, such as aircraft wings or car bodies, allowing them to analyze performance and optimize designs. This method provides real-time images of shock waves, vortices, and other flow phenomena that are otherwise invisible to the naked eye.Moreover, schlieren imaging has practical applications in engineering and manufacturing. For instance, it can be used to detect defects in materials or to monitor combustion processes in engines. By capturing the schlieren patterns produced by these processes, engineers can gain insights into performance and efficiency, leading to improvements in product design and functionality.In addition to its applications in science and engineering, schlieren also finds its place in art and photography. Artists have experimented with schlieren effects to create stunning visuals that play with light and perception. Photographers can capture images that showcase the beauty of schlieren patterns, revealing the hidden dynamics of light and air in their compositions.Understanding schlieren not only enhances our appreciation of natural phenomena but also enriches our knowledge of the physical world. It serves as a reminder of the intricate relationships between light, air, and temperature, and how these elements interact to create the world we perceive. As technology advances, the applications of schlieren imaging will likely expand, opening new avenues for exploration in both scientific and artistic fields.In conclusion, the study of schlieren offers valuable insights into both the natural world and human innovation. Whether it is through the lens of a scientist observing gas flows or an artist capturing ephemeral beauty, schlieren continues to inspire curiosity and creativity. By delving into this intriguing phenomenon, we can deepen our understanding of the complexities of our environment and the principles that govern it.

“schlieren”现象是一种迷人的光学效应，发生在介质（通常是空气）折射率发生变化时。这种效应可以在多种情况下观察到，例如，当光线穿过加热的空气或通过不同密度的介质时。术语schlieren源自德语，意为“条纹”或“线条”，这恰当地描述了在这一过程中出现的视觉模式。从本质上讲，schlieren成像是一种用于可视化透明介质内密度变化的技术，使其成为科学研究和工业应用中不可或缺的工具。最常见的schlieren示例可以在炎热的日子里看到，当热浪扭曲远处物体的视图时。随着热空气从地面上升，它创造了温度和密度的梯度，导致光线弯曲，并产生闪烁的效果。这不仅在视觉上引人注目，而且在科学上具有重要意义，因为它展示了我们环境中流体动力学和热力学原理的作用。在科学研究中，schlieren技术通常用于研究气体流动，特别是在空气动力学中。通过使用schlieren装置，研究人员可以可视化物体周围的气流，例如飞机机翼或汽车车身，从而分析性能并优化设计。这种方法提供了冲击波、涡旋和其他流动现象的实时图像，这些现象在肉眼下是看不见的。此外，schlieren成像在工程和制造中也有实际应用。例如，它可以用来检测材料中的缺陷或监测发动机中的燃烧过程。通过捕捉这些过程产生的schlieren模式，工程师可以获得对性能和效率的深入见解，从而改进产品设计和功能。除了在科学和工程中的应用外，schlieren也在艺术和摄影中占有一席之地。艺术家们实验schlieren效应，以创造出与光和感知互动的惊人视觉效果。摄影师可以捕捉展示schlieren模式之美的图像，揭示他们作品中光和空气的隐秘动态。理解schlieren不仅增强了我们对自然现象的欣赏，也丰富了我们对物理世界的知识。它提醒我们光、空气和温度之间复杂的关系，以及这些元素如何相互作用，创造出我们所感知的世界。随着技术的进步，schlieren成像的应用可能会扩展，开启科学和艺术领域探索的新途径。总之，schlieren的研究为我们提供了对自然世界和人类创新的宝贵见解。无论是通过观察气体流动的科学家的镜头，还是捕捉短暂之美的艺术家，schlieren继续激发好奇心和创造力。通过深入研究这一引人入胜的现象，我们可以加深对环境复杂性及其治理原则的理解。