meteoroid
英
美
n. 流星体
COCA.28488
英英释义
noun
- (astronomy) any of the small solid extraterrestrial bodies that hits the earth's atmosphere
双语例句
- The cometary ejection play a crucial role in formation and evolution of the meteoroid stream.
彗星的喷发速度在流星群的演化过程中起着重要作用。 - Turn the globe by just a few hours earlier on that day in June and the meteoroid would have been over the border of Pakistan and India – exactly where everyone was fearing a nuclear attack.
如果六月的这天，地球转动退回到几小时前，流星降落的地方就正好是巴基斯坦和印度的交界处，世人唯恐发生核战的交界地。 - That's when a meteoroid entered the earth's atmosphere over the Mediterranean and was picked up by U.
美国预警卫星在监测高空爆炸物和来袭导弹时发现一颗流星穿破地球大气层，降落在地中海地区。 - In order to ensure the safety in operation of orbital spacecrafts, especially the long duration and large size spacecrafts. Space debris and meteoroid shield are very important factors in the designing of spacecrafts.
为了保证在轨航天器的安全运行，微流星体和空间碎片的防护成为现有航天器，特别是长寿命、大尺寸航天器设计时必须考虑的因素。 - Technically, a meteor is merely the streak of light we see trailing a meteoroid.
严格说来，流星仅仅指流星体身后的那一道光，也就是我们看着划过天空那一道。 - 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； - A unique methodology providing global optimization of spacecraft protective structures is presented to minimize spacecraft weight of protective structural systems exposed to meteoroid and space debris hypervelocity impacts.
文章描述了一个用于航天器防护结构综合优化的独特方法&几何规划优化技术，以减小暴露于流星体和空间碎片超高速碰撞环境下的航天器防护结构系统的重量。 - A meteoroid that has entered the earth's atmosphere.
进入地球大气层的流行。 - The probability of impact or failure is calculated by Finite Element Analysis Method and the arithmetic flow of spacecraft risk assessment in the meteoroid environment is designed. Second, both the earth shadowing effect and the spacecraft shadowing effect are discussed thoroughly.
应用有限元分析方法计算碰撞及失效概率，设计出了微流星体环境风险评估算法流程。 - So far many countries are researching the technology of risk assessment of space debris impact, some of them already have a risk code, which can be used to value the risk assessment for the spacecraft in both meteoroid and orbital debris environment.
目前各航天大国都在研究航天器风险评估技术，有些国家已经有了成熟的风险评估软件，可针对微流星体环境和轨道碎片环境分别对航天器进行风险评估。