meteoroid

简明释义

英[ˈmiːtiərɔɪd]美[ˈmiːtɪərˌɔɪd]

n. [天] 流星体

英英释义

单词用法

同义词

反义词

例句

1.High velocity impact on long duration and large size spacecraft by meteoroid and space debris is a threat to its safety operation, that can in turn lead to significant damage and catastrophic failure.

微流星体及空间碎片的高速撞击威胁着长寿命、大尺寸航天器的安全运行，导致其严重的损伤和灾难性的失效。

2.High velocity impact on spacecraft by meteoroid and space debris is a threat to its safety operation, that can in turn lead to significant damage and catastrophic failure.

微流量及空间碎片的高速撞击威胁着航天器的安全运行，导致其严重的损伤和灾难性的失效。

3.The so-called meteorite is a large meteoroid landed on the Earth's surface.

所谓陨石，就是降落于地球表面的大流星体。

4.Fengyun's loss also could be due to a massive meteoroid or orbital debris hit, occurring coincidentally within range of China's main space launch base. But the odds of that are even smaller.

还有可能风云卫星是在中国基地发射导弹的同时被小行星或太空垃圾击中，但这种概率更小。

5.Hypervelocity impact on long duration and large size spacecraft by meteoroid and space debris is a threat to its safety operation that can in turn lead to significant damage and catastrophic failure.

微流星体及空间碎片的超高速撞击威胁着长寿命、大尺寸航天器的安全运行，导致其严重的损伤和灾难性的失效。

6.Of, relating to, or formed by a meteoroid.

关于流星、流星体或由流星、流星体组成。

7.When a meteoroid enters the atmosphere, it compresses the air in front of it.

当流星体进入大气层，它压缩的空气在前面的。

8.Especially, the history and status of meteoroid astronomy, the ground-based and space observations of meteoroid streams, the observed and theoretical radiants about meteor showers;

重点叙述流星天文学的历史与现状；流星群的地面和空间观测；流星雨观测和理论辐射点；

9.The space debris and meteoroid environment are defined followed by the formulation of the general weight objective function.

空间碎片和流星体环境由广义加权目标函数的公式来定义。

10.If a meteoroid survives its passage through the atmosphere, it is called a meteorite.

如果一个流星体在穿过大气层后幸存下来，它被称为陨石。

11.When a meteoroid enters the Earth's atmosphere, it can produce a bright streak of light known as a meteor.

当一个流星体进入地球大气层时，它可以产生一个明亮的光带，称为流星。

12.The size of a meteoroid can vary from a grain of sand to a boulder.

一个流星体的大小可以从沙粒到巨石不等。

13.Scientists study meteoroids to learn more about the formation of our solar system.

科学家研究流星体以了解更多关于我们太阳系形成的知识。

14.A meteoroid is a small rocky or metallic body in outer space, often originating from comets or asteroids.

一个流星体是在外层空间中存在的小型岩石或金属物体，通常来源于彗星或小行星。

作文

In the vast expanse of space, there are countless celestial bodies that capture our imagination and curiosity. Among these fascinating objects is the meteoroid, which is defined as a small rocky or metallic body traveling through space. The study of meteoroids not only helps us understand the formation of our solar system but also provides insights into the history of our planet. 流星体是指在太空中旅行的小型岩石或金属体。它们通常是从彗星或小行星的碎片中形成的，经过时间的推移，逐渐分散到宇宙的不同区域。The journey of a meteoroid begins when it is ejected from its parent body, such as an asteroid or a comet. These small fragments can vary in size from tiny grains of dust to larger boulders several meters across. When a meteoroid enters the Earth's atmosphere, it encounters friction with the air, causing it to heat up and produce a bright streak of light known as a meteor. This phenomenon is often referred to as a 'shooting star,' although it is important to note that this term is somewhat misleading since the object itself is not a star but rather a meteoroid.Interestingly, most meteoroids burn up completely upon entering the Earth's atmosphere; however, some larger ones survive the intense heat and pressure and reach the surface of the Earth as meteorites. These meteorites can provide valuable information about the early solar system, as they often contain primitive materials that have remained unchanged for billions of years. Scientists study these objects to learn more about the processes that shaped our planetary neighborhood and the origins of life on Earth.The impact of meteoroids on our planet has been significant throughout history. There have been instances where large meteoroids have collided with the Earth, resulting in catastrophic events. For example, the Chicxulub crater in Mexico is believed to be the result of a massive meteoroid impact that contributed to the extinction of the dinosaurs around 66 million years ago. Such events remind us of the potential dangers posed by these celestial objects and the importance of monitoring their trajectories.Today, scientists and astronomers are actively engaged in tracking meteoroids and assessing their risks. Various space agencies, including NASA, have developed programs to detect and catalog near-Earth objects (NEOs), which include meteoroids that could potentially pose a threat to our planet. By understanding their paths and sizes, we can better prepare for any possible impacts and devise strategies to mitigate their effects.In conclusion, the study of meteoroids is a captivating field that bridges astronomy, geology, and planetary science. As we continue to explore the cosmos, our understanding of these small yet significant objects will deepen, revealing more about our universe and our place within it. The journey of a meteoroid from the depths of space to the surface of our planet is a testament to the dynamic nature of our solar system and the intricate connections between its various components. Understanding meteoroids not only enriches our knowledge of space but also highlights the ongoing relationship between Earth and the cosmos.

在广袤的宇宙中，有无数天体吸引着我们的想象力和好奇心。在这些迷人的物体中，有流星体，它被定义为在太空中旅行的小型岩石或金属体。研究流星体不仅有助于我们理解太阳系的形成，还能提供关于我们地球历史的见解。流星体是指在太空中旅行的小型岩石或金属体。它们通常是从彗星或小行星的碎片中形成的，经过时间的推移，逐渐分散到宇宙的不同区域。流星体的旅程始于它从母体（如小行星或彗星）被弹射出去。这些小碎片的大小可以从微小的尘埃颗粒到几米大的大石块不等。当流星体进入地球的大气层时，它与空气发生摩擦，导致其升温并产生明亮的光迹，称为流星。这种现象通常被称为“流星”，尽管需要注意的是，这个术语有些误导，因为该物体本身并不是星星，而是一个流星体。有趣的是，大多数流星体在进入地球大气层时会完全燃烧；然而，一些较大的流星体则在强烈的热量和压力下幸存下来，并作为陨石到达地球表面。这些陨石可以提供关于早期太阳系的宝贵信息，因为它们通常含有数十亿年来未曾改变的原始材料。科学家研究这些物体，以了解塑造我们行星邻域的过程以及生命在地球上的起源。流星体对我们星球的影响在历史上是显著的。有一些实例显示，大型流星体与地球相撞，导致灾难性事件。例如，位于墨西哥的希克苏鲁伯陨石坑被认为是一次巨大的流星体撞击的结果，这次撞击导致了大约6600万年前恐龙的灭绝。这些事件提醒我们这些天体可能带来的危险，以及监测其轨迹的重要性。如今，科学家和天文学家积极参与追踪流星体并评估其风险。包括NASA在内的各个太空机构已开发出程序来检测和记录近地天体（NEOs），这些天体包括可能对我们星球构成威胁的流星体。通过了解它们的路径和大小，我们可以更好地为任何可能的撞击做好准备，并制定减轻其影响的策略。总之，研究流星体是一个迷人的领域，连接着天文学、地质学和行星科学。随着我们继续探索宇宙，对这些小而重要的物体的理解将加深，揭示更多关于我们宇宙以及我们在其中的位置的信息。从太空深处到我们星球表面的流星体的旅程证明了我们太阳系的动态本质以及其各组成部分之间的复杂联系。了解流星体不仅丰富了我们对太空的知识，还突显了地球与宇宙之间持续的关系。