查询词典 NASA

This is the website site of Exobiology branch of NASA.

这是NASA外空生物学部的站点。

NASA is planning an extra-long spacewalk today to give the space station more fresh batteries.

今天，NASA计划进行一次特长的太空行走，给太空站添加新的能量。

This was taken on the fourth science flight of NASA's Operation Ice Bridge airborne Earth science mission to study Antarctic ice sheets, sea ice, and ice shelves.

这是第四次NASA空降地球科学使命冰桥考察飞行时拍摄到的，考察主要是了解认识南极冰层，海洋冰和冰架。

NASA's Viking landers were the first spacecraft to land on Mars and conduct scientific research.

NASA的&海盗号&火星探测飞船是人类首个登陆火星并进行科学研究的航天器。

"Thanks to advances in computer power, since the 1990's we have been able to predict these upswings in activity," said William Cooke, head of NASA's Meteoroid Environment Office."This year there is going to be a Leonid strong outburst , where the rates may race up to 300 per hour," Cooke said.

&感谢计算的发展，从1990年开始我们就能预测到这些天文现象，&NASA流星体研究办公室负责人William Cooke这样说，今年将是狮子座流星群的一次大爆发，其数量可达到一小时300颗左右。

NASA engineers knew that simple fact when they were designing Skylab in the 1970s.

在1970年代设计Skylab时，NASA的工程师就采用这个简单的现象。

"Just after it was born, this neutron star got a one-way ticket out of the Galaxy," said co-author Robert Petre of NASA's Goddard Space Flight Center in Greenbelt, Md."Astronomers have seen other stars being flung out of the Milky Way, but few as fast as this."

&就在刚出生后不久，这个中子星就得到了一张离开银河系的路票&来自NASA的Goddard宇宙发射中心的共著者 Robert Petre 说到&天文学家已经观测到其他恒星冲出银河系，但很少有他这么快的&

NASA meant each one to last ten years or 100 flights, and though bad weather put paid to that, the five spaceworthy orbiters made more than 130 flights.

NASA将其寿命设计为10年或100次飞行，但恶劣的天气却使之事与愿违，5架运行良好的轨道器已执行了超过130次飞行任务。

Earlier this year, NASA's Lunar Reconnaissance Orbiter camera provided images of the original landing area.

今年早些时候，NASA的月球勘测轨道飞行器照相机拍摄了它原始着陆区域的照片。

Results show that the convergence is improved evidently.(3). The hybrid model which combines three-dimensional simulation in turbine and zero-dimensional simulation in the other engine components is built in the present paper after learning the zooming technique from NASA. The matching between components in a single-shaft turbojet engine after the turbine retrofitting is studied.

在对以上三种不同层次的数学模型及其解法进行了研究的基础上，鉴于NASA的部件一维仿真与总体零维仿真相结合的ZOOMING技术，本文采用将涡轮的全三维仿真与发动机总体的零维仿真相结合的方案，对某单轴涡喷发动机在涡轮改型后的匹配问题进行了研究。

John Robbins lives with his family in Santa Cruz, California.

约翰罗宾和家人居住在加利福尼亚州的圣克鲁斯县。

The international background is mainly the economic ties among different nations tented to be widen and deepen at the peace and development times.

国际背景主要是和平与发展时代条件下的世界各国经济贸易联系的日益加深。