capillary tube

简明释义

毛细管

英英释义

例句

1.A capillary tube can be used to demonstrate how liquids can defy gravity.

毛细管可用于演示液体如何违抗重力。

2.During the study of plant biology, we observed how water moves through the capillary tube in roots.

在植物生物学研究中，我们观察到水如何通过植物根部的毛细管移动。

3.In the experiment, we used a capillary tube to measure the height of the liquid rise.

在实验中，我们使用毛细管来测量液体上升的高度。

4.The capillary tube is essential for accurate blood sample collection in medical laboratories.

毛细管在医学实验室中对于准确采集血样是必不可少的。

5.The liquid traveled through the capillary tube quickly, demonstrating the principle of capillarity.

液体通过毛细管迅速移动，展示了毛细现象的原理。

作文

The world of science is filled with fascinating concepts and tools that help us understand the complexities of nature. One such tool is the capillary tube, which plays a crucial role in various scientific fields, including biology, chemistry, and physics. A capillary tube is a very thin tube that allows liquids to flow through it due to capillary action, which is the ability of a liquid to flow in narrow spaces without the assistance of external forces. This phenomenon is primarily observed in small-diameter tubes, such as those found in plants, where water and nutrients are transported from the roots to the leaves. In biology, capillary tubes are essential for understanding how plants absorb water. When a plant's roots take up water from the soil, this water travels upward through the xylem, which consists of numerous capillary tubes. The cohesive properties of water molecules allow them to stick together, while their adhesive properties enable them to cling to the walls of the capillary tubes. This combination creates a continuous column of water that can move against gravity, reaching the highest leaves of the plant. Without capillary tubes, plants would struggle to survive, as they rely on this mechanism for hydration and nutrient transport.In chemistry, capillary tubes are often used in experiments to study the properties of liquids. For instance, scientists can measure the surface tension of a liquid by observing how high it rises in a capillary tube. The height to which the liquid ascends is influenced by factors such as the diameter of the tube and the liquid's surface tension. By manipulating these variables, researchers can gain valuable insights into the physical characteristics of different substances.Furthermore, capillary tubes are also utilized in various industrial applications. In the field of medicine, capillary tubes are used to collect blood samples for analysis. These tubes are designed to fill automatically with blood due to capillary action, making the process efficient and minimizing the risk of contamination. Additionally, capillary tubes are employed in chromatography, a technique used to separate mixtures into their individual components. In this process, a mixture is drawn up into a capillary tube coated with a stationary phase, allowing the different substances to travel at varying speeds and thus be separated based on their chemical properties.In conclusion, the capillary tube is an essential tool that demonstrates the remarkable principles of physics and chemistry. Whether in the natural world, where it facilitates the growth of plants, or in laboratory settings, where it aids in research and medical diagnostics, the capillary tube showcases the intricate connections between science and the everyday phenomena we observe around us. Understanding the function and importance of capillary tubes not only enriches our knowledge of science but also enhances our appreciation for the elegant mechanisms that govern life and the universe.

科学的世界充满了迷人的概念和工具，帮助我们理解自然的复杂性。一个这样的工具就是毛细管，它在生物学、化学和物理学等多个科学领域中发挥着至关重要的作用。毛细管是一种非常细的管道，允许液体通过它流动，这要归功于毛细现象，即液体在没有外部力量的帮助下在狭窄空间中流动的能力。这种现象主要发生在小直径的管道中，例如植物中的管道，在这些管道中，水和养分从根部运输到叶子。在生物学中，毛细管对于理解植物如何吸收水分至关重要。当植物的根从土壤中吸收水分时，这些水通过木质部向上移动，木质部由许多毛细管组成。水分子之间的凝聚力使它们能粘在一起，而它们的附着力则使它们能够粘附在毛细管的壁上。这种结合形成了一列连续的水柱，可以逆重力移动，达到植物的最高叶子。如果没有毛细管，植物将难以生存，因为它们依赖这种机制进行水分和养分的运输。在化学中，毛细管通常用于实验，以研究液体的特性。例如，科学家可以通过观察液体在毛细管中上升的高度来测量液体的表面张力。液体上升的高度受到管道直径和液体表面张力等因素的影响。通过操纵这些变量，研究人员可以获得有关不同物质物理特性的宝贵见解。此外，毛细管还广泛应用于各种工业领域。在医学领域，毛细管用于收集血样进行分析。这些管道设计成自动填充血液，利用毛细作用，使过程高效并减少污染的风险。此外，毛细管还用于色谱法，这是一种用于将混合物分离为其各个组分的技术。在此过程中，混合物被吸入涂有固定相的毛细管中，从而使不同物质以不同速度移动，从而根据其化学特性进行分离。总之，毛细管是一个展示物理和化学卓越原理的重要工具。无论是在自然界中，它促进植物的生长，还是在实验室环境中，它有助于研究和医疗诊断，毛细管展示了科学与我们周围日常现象之间的复杂联系。理解毛细管的功能和重要性不仅丰富了我们的科学知识，也增强了我们对支配生命和宇宙的优雅机制的欣赏。