annulus

简明释义

英[ˈænjʊləs]美[ˈænjʊləs]

n. 环，环形物；圆环域

复 数 a n n u l i 或 a n n u l u s e s

英英释义

单词用法

同义词

反义词

例句

1.Annulus is equipped with five or more agitators and a partial radial baffle.

环室中装有五个或更多个搅拌机和一个径向折流板。

2.Want to treat the condition of the arenaceous water around, if if (arenaceous annulus water is held in the arms).

要看看四周的砂水的形势，倘若是(砂环水抱)。

3.Design and calculation of the regulation annulus.

调整环的设计计算。

4.Weight-bearing is probably a key factor in the increase of annulus fibrosus cells apoptosis.

负重可能是纤维环细胞凋亡增加的关键因素。

5.Objective. To reveal the macro and micro structure of the translamellar bridging network in the lumbar annulus.

目的：观察腰椎纤维环经板层网桥的大体和显微结构。

6.The purpose of cement bond log (CBL) under increasing borehole pressure is to differentiate micro annulus from bypass channel.

在井内加压下进行水泥胶结测井带压作业，其目的是将微环空与串槽区分开。

7.The float shoe prevents reverse flow, or U-tubing, of cement slurry from the annulus into the casing.

浮鞋能够防止环空中的水泥浆向套管内流动这种回流或者U型管效应的发生。

8.A downhole device that enables circulation through the tubing string and associated annulus.

能够经油管柱和相关的环形空间实现循环的井下装置。

9.A term used to describe the annulus surrounding a production tubing string above the production packer.

描述在生产封隔器上面的围绕生产油管的环形空间所用的术语。

10.The annulus of the tree gives us a clue about its age.

树的年轮给我们提供了关于其年龄的线索。

11.The annulus is crucial for understanding the growth patterns of certain species.

理解某些物种的生长模式时，环是至关重要的。

12.During the surgery, the doctor carefully removed the annulus from the patient's spine.

手术中，医生小心地从患者的脊柱中移除了环。

13.The veterinarian examined the cat's ear and found an infection in the annulus.

兽医检查了猫的耳朵，发现环内有感染。

14.In mathematics, the area between two concentric circles is known as an annulus.

在数学中，两个同心圆之间的区域被称为环。

作文

In the field of mathematics and geometry, the term annulus refers to a ring-shaped object or region. It is defined as the area between two concentric circles, where one circle is situated inside the other. The concept of an annulus is not only fascinating but also has practical applications in various domains, including engineering, architecture, and even biology.To better understand the significance of an annulus, let us consider its geometric properties. An annulus can be described by its inner radius and outer radius. The area of an annulus can be calculated using the formula: Area = π(R² - r²), where R is the outer radius and r is the inner radius. This formula illustrates how the size of an annulus can change dramatically with slight alterations to either radius. For example, if we have an annulus with an inner radius of 2 units and an outer radius of 5 units, we can easily compute its area as follows: Area = π(5² - 2²) = π(25 - 4) = 21π square units.The annulus is not just a mathematical construct; it appears in real-world scenarios as well. In engineering, annuli are often found in the design of pipes and tubes, where the space between two cylindrical surfaces needs to be accounted for. For instance, when designing a double-walled pipe for transporting fluids, the space between the two walls forms an annulus. This annulus serves as an insulation layer, preventing heat loss and ensuring the fluid remains at the desired temperature.Moreover, in the field of biology, the concept of an annulus can be observed in various organisms. Certain species of fungi, for instance, have a ring-like structure known as an annulus that encircles their stalks. This structure plays a critical role in the reproductive cycle of these fungi, as it can help in the dispersal of spores. Understanding the biological significance of an annulus can provide insights into the evolutionary adaptations of these organisms.Furthermore, the annulus is a crucial concept in physics, particularly in the study of waves and vibrations. When analyzing wave patterns, the annulus can represent regions of constructive and destructive interference. For example, in a circular membrane, the areas where the waves reinforce each other can create vibrant patterns that resemble annuli.In conclusion, the term annulus encompasses a rich array of meanings across different fields. Whether in mathematics, engineering, biology, or physics, the annulus serves as a vital concept that helps us understand the world around us. Its unique properties and applications highlight the interconnectedness of various disciplines and remind us of the beauty of geometry in both theoretical and practical contexts. As we continue to explore the implications of an annulus, we gain a deeper appreciation for the intricate patterns that shape our universe.

在数学和几何学领域，术语annulus指的是一种环形物体或区域。它被定义为两个同心圆之间的区域，其中一个圆位于另一个圆的内部。annulus的概念不仅令人着迷，而且在工程、建筑甚至生物学等多个领域都有实际应用。为了更好地理解annulus的重要性，让我们考虑它的几何特性。annulus可以通过其内半径和外半径来描述。可以使用公式计算annulus的面积：面积 = π(R² - r²)，其中R是外半径，r是内半径。这个公式说明了annulus的大小如何随着任一半径的微小变化而显著变化。例如，如果我们有一个内半径为2个单位、外半径为5个单位的annulus，我们可以轻松地计算出它的面积：面积 = π(5² - 2²) = π(25 - 4) = 21π平方单位。annulus不仅仅是一个数学构造；它也出现在现实世界的场景中。在工程中，annuli通常存在于管道和管子的设计中，其中需要考虑两个圆柱表面之间的空间。例如，在设计用于运输流体的双层管道时，两个壁之间的空间形成了一个annulus。这个annulus作为绝缘层，防止热量损失并确保流体保持在所需的温度。此外，在生物学领域，annulus的概念可以在各种生物中观察到。例如，某些真菌物种具有一种环状结构，称为annulus，它环绕在其茎部。这种结构在这些真菌的繁殖周期中起着关键作用，因为它可以帮助散播孢子。理解annulus的生物学意义可以提供对这些生物进化适应的见解。此外，annulus在物理学中也是一个关键概念，特别是在波动和振动的研究中。在分析波动模式时，annulus可以表示建设性和破坏性干涉的区域。例如，在一个圆形膜中，波动相互增强的区域可以形成类似于annuli的生动图案。总之，术语annulus在不同领域中涵盖了丰富的含义。无论是在数学、工程、生物学还是物理学中，annulus都是一个重要的概念，帮助我们理解周围的世界。它独特的特性和应用突显了各个学科之间的相互联系，并提醒我们几何学在理论和实践背景中的美丽。随着我们继续探索annulus的含义，我们对塑造我们宇宙的复杂模式有了更深的欣赏。