meteoroids 中文意思是什麼
meteoroids
解釋
太空武力-
If the meteoroids are bunched together, the number of meteors seen varies from year to year.
如果流星體聚集在一起，則每年看到的流星數都不一樣。 -
Moving swiftly through the atmosphere, meteoroids are heated rapidly by friction.
流星體在快速穿過大氣層時，因磨擦而迅速加熱。 -
Others became asteroids, comets and smaller meteoroids
其他人成為了小行星彗星和更小的隕石。 -
Meteoroids are small particles in space with size similar to grains of sand
.宇宙充塞著沙粒大小的流星體。 -
Countless meteoroids will be sent hurtling into the earth ' s atmosphere at 71 kilometres a second
無數流星將以每秒71公里的速度劃破長空。 -
Life - bearing meteoroids and dust particles would be exposed to the vacuum of space, extremes in temperature and several different kinds of radiation
帶有生命的流星體與塵粒，還會暴露在宇宙的真空、極端的溫度與數種不同的輻射之下。 -
Most of the meteoroids of the leonid meteor stream concentrate in an elongated thin ribbon - like region. the stream orbits around the sun in an elliptical orbit with a period of about 33 years
獅子座流星群聚集於一條狹長的區域內，以極為橢圓形的軌道環繞太陽運行，周期約為 -
A " meteor shower " occurs when our home planet encounters a relatively dense region of meteoroids in space. an unusually large number of meteors can then be seen streaming from a certain point in the sky known as the " radiant "
許多流星像從星空中某一點稱為輻射點向外散射而出，其實流星群飛向地球時大致是平行的，輻射點是視覺上的透視象。 -
This at least accounts for the fact that a particular group of meteoroids shares with its parent comet more or less the same orbit, which can remain relatively unchanged over eons. an immediate consequence is that our earth makes periodic rendezvous with this meteoroid swarm, thereby culminating in a regular display of these celestial fireworks. to name a few, we have the lyrids in april and the geminids in december
流星雨的成因是地球遇上了一群密集的流星體，一般相信，流星群是由周期性彗星分解出來的物質或由瓦解了的彗核所形成，所以流星群和其母體彗星有大致相同的軌道，由於流星群的軌道頗為固定，所以地球會周期性地穿越這些流星群，形成固定出現的流星雨，例如四月天琴座流星雨十二月雙子座流星雨等。 -
According to meteor scientists, there will be two maxima for leonids this year, and hong kong may encounter the first one at dawn on 18 november. about 20 meteors per hour are predicted. however, as the meteoroids stream is less dense than 2001, the shower is expected to be less spectacular even with the absence of the moon
據專門研究流星的學者預測，今年的獅子座流星雨極大值即高峰期有兩個，香港可於11月18日凌晨遇上第一個，每小時可見約20顆流星，但由於流星物質已遠較2001時稀疏，故即使當日並無月光干擾，相信這次獅子座流星雨亦不會太壯觀。 -
Observation of meteors throws light on our understanding of the motion of the celestial bodies in our solar system, physical properties of the earths upper atmosphere and the spatial distribution of meteoroids which helps choosing safe and proper trajectories for launch vehicles such as artificial satellites
觀測研究流星對研究太陽系天體的運動地球高空大氣物理性質了解流星體分佈這項資料對選擇航天器如人造衛星的運行軌跡十分重要等都有重要的意義。 -
There float in the vast reaches of our solar system swarms of sand bits and dust clods known as meteoroids. when these " space debris " tear into the earth s atmosphere, air friction causes them to burn, forming momentary bright streaks that blaze across the sky
太陽系內充滿著稱為流星體的塵埃和固體塊，當這些太空渣滓闖進地球的范圍時，便會和大氣摩擦而燃燒，成為我們日常所見的流星。 -
Our solar system consists of an average star we call the sun, the planets mercury, venus, earth, mars, jupiter, saturn, uranus, neptune, and pluto and, the satellites of the planets ; numerous comets asteroids, and meteoroids ; and the interplanetary medium
我們太陽系由普通恆星? ?太陽、九大行星（水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星）和各大行星的衛星、數量眾多的彗星、小行星、流星以及行星間的介質組成。
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