capillary tube

简明释义

毛细管

英英释义

例句

1.When the temperature rises, the liquid inside the capillary tube expands.

当温度升高时，毛细管内的液体会膨胀。

2.The capillary tube is essential for blood sampling in medical tests.

毛细管在医学检测中的血样采集中至关重要。

3.In a laboratory, we used a capillary tube to measure the viscosity of different liquids.

在实验室中，我们使用毛细管来测量不同液体的粘度。

4.A capillary tube can help demonstrate how plants absorb water from the soil.

毛细管可以帮助演示植物如何从土壤中吸收水分。

5.The liquid moved through the capillary tube due to capillary action.

液体通过毛细管因毛细作用而移动。

作文

The study of fluid dynamics is a fascinating field that often leads us to explore various concepts related to how liquids behave in different environments. One such concept is the behavior of liquids in narrow spaces, which brings us to the important term known as a capillary tube. A capillary tube is essentially a very thin tube, usually made of glass or plastic, that has a small internal diameter. These tubes are crucial in various scientific experiments and applications, particularly in the fields of chemistry and biology.In essence, the capillary tube functions based on the principle of capillarity, which is the ability of a liquid to flow in narrow spaces without the assistance of external forces. This phenomenon occurs due to the adhesive forces between the liquid and the walls of the tube, as well as the cohesive forces within the liquid itself. When a capillary tube is placed upright in a liquid, the liquid will either rise or fall in the tube depending on the nature of the liquid and the material of the tube. For example, water typically rises in a glass capillary tube due to strong adhesive forces between the water molecules and the glass surface.The applications of capillary tubes are vast and varied. In medical laboratories, they are often used for collecting blood samples or measuring small volumes of liquids. The precise control over the volume of liquid that can be drawn into a capillary tube makes it an invaluable tool for accurate measurements. Additionally, in the field of chromatography, capillary tubes are used to separate different components of a mixture based on their movement through the tube under the influence of a solvent.Moreover, capillary tubes also play a significant role in environmental science. They are utilized in soil analysis to study how water moves through soil layers, which is critical for understanding irrigation practices and groundwater recharge. By observing the movement of water in capillary tubes, scientists can gain insights into the permeability of different soil types and their ability to retain moisture.In conclusion, the capillary tube is a simple yet powerful tool that illustrates fundamental principles of physics and chemistry. Its ability to manipulate small volumes of liquids and its wide range of applications make it an essential component in many scientific disciplines. Understanding how capillary tubes work not only enhances our knowledge of fluid dynamics but also opens doors to numerous practical applications that impact our everyday lives. Whether in a laboratory setting or in environmental studies, the capillary tube continues to be a vital instrument for researchers and professionals alike.

流体动力学的研究是一个迷人的领域，它常常引导我们探索液体在不同环境中如何行为的各种概念。其中一个重要的概念是液体在狭窄空间中的行为，这使我们想到了一个重要的术语，称为毛细管。毛细管基本上是一种非常细的管子，通常由玻璃或塑料制成，具有小的内径。这些管子在各种科学实验和应用中至关重要，特别是在化学和生物学领域。从本质上讲，毛细管基于毛细现象的原理，即液体在狭窄空间中流动的能力，而无需外部力量的帮助。这种现象发生是由于液体与管壁之间的粘附力，以及液体内部的内聚力。当毛细管直立放置在液体中时，液体会根据液体的性质和管子的材料在管中上升或下降。例如，水通常会在玻璃毛细管中上升，这是因为水分子与玻璃表面之间的强粘附力。毛细管的应用广泛而多样。在医学实验室中，它们通常用于收集血液样本或测量小体积的液体。对可以吸入毛细管的液体体积的精确控制，使其成为准确测量的宝贵工具。此外，在色谱法领域，毛细管用于根据溶剂的影响分离混合物的不同成分。此外，毛细管在环境科学中也发挥着重要作用。它们被用于土壤分析，以研究水如何在土壤层中移动，这对于理解灌溉实践和地下水补给至关重要。通过观察水在毛细管中的运动，科学家可以深入了解不同土壤类型的渗透性及其保持水分的能力。总之，毛细管是一种简单而强大的工具，它阐明了物理和化学的基本原理。它操纵小体积液体的能力及其广泛的应用使其成为许多科学学科的重要组成部分。了解毛细管的工作原理不仅增强了我们对流体动力学的认识，还为许多影响我们日常生活的实际应用打开了大门。无论是在实验室环境中还是在环境研究中，毛细管继续成为研究人员和专业人士的重要工具。