| 单词 | 大气层 |
| 释义 | 〔window〕A range of electromagnetic frequencies that pass unobstructed through a planetary atmosphere.电波反射装置：电磁波段能够不受阻碍地穿过行星大气层的一种电磁频率范围〔arm〕a space reentry vehicle that was armed with a ceramic shield.重返大气层航天运载工具配备陶瓷保护层装置〔ether〕The regions of space beyond the earth's atmosphere; the heavens.太空：超出地球大气层的空间区域；太空〔chemosphere〕The region of the atmosphere from 30 to 190 kilometers (20 to 120 miles) above Earth's surface, in which photochemical reactions initiated by solar radiation occur.光化层：地球表面以上30至190公里（20至120英里）的大气层，由于太阳光照射所产生的光化反应在这里发生〔space〕The region of this expanse beyond Earth's atmosphere.太空：地球大气层以外的空间部分〔exosphere〕The outermost region of a planet's atmosphere.外大气圈：行星大气层的最外部〔helium〕A colorless, odorless inert gaseous element occurring in natural gas and with radioactive ores. It is used as a component of artificial atmospheres and laser media, as a refrigerant, as a lifting gas for balloons, and as a superfluid in cryogenic research. Atomic number 2; atomic weight 4.0026; boiling point -268.9°C; density at 0°C 0.1785 gram per liter. See table at element 氦：自然界天然气体或放射性矿石中一种无色、无味的惰性气体状成分。用作人造大气层和镭射媒体的组成部分，和用作制冷剂及飞行气球的气体，还在低温学研究中用作超流体。原子序数2；原子量4.0026；沸点-268.9°C；浓度在0°C时为每升0.1785克 参见 element〔thermosphere〕The outermost shell of the atmosphere, between the mesosphere and outer space, where temperatures increase steadily with altitude.热大气层，热电离层：大气层介于中间层和外层空间之间的最外一层，在这一层中温度随高度而稳定增加〔hydrosphere〕The waters of the earth's surface as distinguished from those of the lithosphere and the atmosphere.水界：地球表面的水，与陆界和大气层相区别〔airglow〕A low- or middle-latitude, more or less steady, faint photochemical luminescence in the upper atmosphere.气辉：大气层上部位于低纬或中纬的相对稳定的微弱光化冷光〔halo〕A circular band of colored light around a light source, as around the sun or moon, caused by the refraction and reflection of light by ice particles suspended in the intervening atmosphere.晕：环绕着诸如太阳或月亮等发光体的一圈有色光晕， 通常是由于散布在大气层中的冰物质使光线发生反射或折射而引起的〔atmospheric〕Produced by, dependent on, or coming from the atmosphere.大气引起的：产生、依赖或来自于大气层中的〔rawinsonde〕A radiosonde used to observe the velocity and direction of upper-air winds and tracked by a radio direction-finding instrument or radar.无线电探空测风仪：一种由无线电定向器或雷达制导的监测大气层上层风速和风向的无线电探空仪〔aeropause〕The region of the atmosphere above which aircraft cannot fly.大气层外限：高于此气层飞机不能飞行的一大气层〔exosphere〕The outermost layer of Earth's atmosphere, lying above the thermosphere and extending thousands of kilometers into space, from which molecules having sufficient velocity can escape Earth's gravitation.外逸层：地球大气层的最外圈，位于热层之上，并向太空延展几千公里，在那里分子具有足够的速度可以逃出地球的吸引力〔extraterrestrial〕Originating, located, or occurring outside Earth or its atmosphere:地球外的：源于，存在或位于地球和大气层之外的：〔aerosphere〕The lower portion of the atmosphere in which both uncrewed and crewed flight is possible.大气圈：可飞行无人或载人飞机的大气层的较低部位〔aerospace〕Of or relating to Earth's atmosphere and the space beyond.航空与航天空间的：属于或关于地球大气层及其外层空间的〔aerobraking〕The use of atmospheric drag rather than onboard thrusters to reduce the velocity of a satellite or spacecraft.大气层减速，大气阻力：利用大气层阻力而不是船载推进器来降低卫星或宇宙飞船的速度〔sky〕Often skies The appearance of the upper atmosphere, especially with reference to weather: 常作 skies 天气，气侯：大气层上部的外观，尤指天气：〔sky〕The expanse of air over any given point on Earth; the upper atmosphere as seen from Earth's surface.天，天空：在地球上给定地点上方空气的宽阔区域；大气层上部，如从地球表面看上去〔aeronomy〕The study of the upper atmosphere, especially of regions of ionized gas.高层大气物理学：对有关高层大气，特别是离子化大气层的研究〔ionosphere〕A region of the earth's atmosphere where ionization caused by incoming solar radiation affects the transmission of radio waves. It extends from a height of 50 kilometers (30 miles) to 400 kilometers (250 miles) above the surface.电离层：地球大气层的一个区域，该层由于太阳辐射而导致的电离影响无线电波传输。它从距地表50公里(30英里）的高度延伸到距地表400公里(250英里）处 |
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