What is the TCAS?The traffic collision avoidance system(TCAS),also known as an airborne collision avoidance system(ACAS),is a family of airborne devices that function independently of the ground-based air traffic cont...What is the TCAS?The traffic collision avoidance system(TCAS),also known as an airborne collision avoidance system(ACAS),is a family of airborne devices that function independently of the ground-based air traffic control(ATC)system,and provide collision avoidance protection for a broad spectrum of aircraft types.展开更多
What is a space telescope?A space telescope(also known as space observatory)is a telescope in outer space used to observe astronomical objects.什么是空间望远镜?空间望远镜,又称空间天文台,是一种在太空运行,用来观测天体...What is a space telescope?A space telescope(also known as space observatory)is a telescope in outer space used to observe astronomical objects.什么是空间望远镜?空间望远镜,又称空间天文台,是一种在太空运行,用来观测天体的望远镜。展开更多
Why should we carry out the lunar exploration?The moon is a geological history book,preserving information about the history of the Solar System,including the formation and early evolution of the terrestrial planets a...Why should we carry out the lunar exploration?The moon is a geological history book,preserving information about the history of the Solar System,including the formation and early evolution of the terrestrial planets and their bombardment histories,as well.as providing insight into other fundamental Solar System processes.展开更多
What is the airport terminal?An airport terminal is a building at an airport where passengers board and disembark from an aircraft with the help of some facilities here,and then transfer for ground vehicles.At the ter...What is the airport terminal?An airport terminal is a building at an airport where passengers board and disembark from an aircraft with the help of some facilities here,and then transfer for ground vehicles.At the terminal,passengers purchase tickets,check in their luggage,and go through security。展开更多
How does LES work?发射逃逸系统怎么工作?If something goes wrong on the launch pad or during the ascent,the escape motor would quickly pull the crew module away from danger.如果在发射台或上升过程中出现问题,逃逸发动机会...How does LES work?发射逃逸系统怎么工作?If something goes wrong on the launch pad or during the ascent,the escape motor would quickly pull the crew module away from danger.如果在发射台或上升过程中出现问题,逃逸发动机会将乘员舱迅速带离危险区。展开更多
What is a rocket?The word“rocket”can mean different things.Most people think of a rocket as a spacecraft that launches into space.“Rocket”can mean a type of engine and a vehicle that uses the engine.
Whatis formation flying?Formation flying is,two or more aircrafts traveling and maneuvering together in a disciplined,synchronized,predetermined manner.This kind of flying requires highly for flight speed,flying pract...Whatis formation flying?Formation flying is,two or more aircrafts traveling and maneuvering together in a disciplined,synchronized,predetermined manner.This kind of flying requires highly for flight speed,flying practice and maneuvering skills,which makes this highly demanding for pilots mentally as well as physically.展开更多
What is the nacelle?什么是“舱”?Nacelle comes from the French word nacelle'which is the gondola or wicker basket suspended beneath a ballon.By analogy,many things that are outside the body of an aircraft,includin...What is the nacelle?什么是“舱”?Nacelle comes from the French word nacelle'which is the gondola or wicker basket suspended beneath a ballon.By analogy,many things that are outside the body of an aircraft,including the compartments that house the engines,can be called nacelles.“舱”来自法语单词“nacelle”,本义是贡多拉(传统划船)或悬浮在气球下的柳条吊篮。展开更多
What is agyroscope?A gyroscope is a device which has a spinning disc mounted on the base so that the disc can move freely in more than one direction and the orientation remains unchanged irrespective of the movement o...What is agyroscope?A gyroscope is a device which has a spinning disc mounted on the base so that the disc can move freely in more than one direction and the orientation remains unchanged irrespective of the movement of the base.展开更多
What is a solar panel?A solar panel,also called photovoltaic panel.is a devicethat directly converts the energy of light from the sun,whichis composed of particles of energy called'photons',intoelectricity tha...What is a solar panel?A solar panel,also called photovoltaic panel.is a devicethat directly converts the energy of light from the sun,whichis composed of particles of energy called'photons',intoelectricity that can be usedto power electrical loads such as satellites.展开更多
文摘What is the TCAS?The traffic collision avoidance system(TCAS),also known as an airborne collision avoidance system(ACAS),is a family of airborne devices that function independently of the ground-based air traffic control(ATC)system,and provide collision avoidance protection for a broad spectrum of aircraft types.
文摘What is a space telescope?A space telescope(also known as space observatory)is a telescope in outer space used to observe astronomical objects.什么是空间望远镜?空间望远镜,又称空间天文台,是一种在太空运行,用来观测天体的望远镜。
文摘Why should we carry out the lunar exploration?The moon is a geological history book,preserving information about the history of the Solar System,including the formation and early evolution of the terrestrial planets and their bombardment histories,as well.as providing insight into other fundamental Solar System processes.
文摘What is the airport terminal?An airport terminal is a building at an airport where passengers board and disembark from an aircraft with the help of some facilities here,and then transfer for ground vehicles.At the terminal,passengers purchase tickets,check in their luggage,and go through security。
文摘How does LES work?发射逃逸系统怎么工作?If something goes wrong on the launch pad or during the ascent,the escape motor would quickly pull the crew module away from danger.如果在发射台或上升过程中出现问题,逃逸发动机会将乘员舱迅速带离危险区。
文摘What is a rocket?The word“rocket”can mean different things.Most people think of a rocket as a spacecraft that launches into space.“Rocket”can mean a type of engine and a vehicle that uses the engine.
文摘Whatis formation flying?Formation flying is,two or more aircrafts traveling and maneuvering together in a disciplined,synchronized,predetermined manner.This kind of flying requires highly for flight speed,flying practice and maneuvering skills,which makes this highly demanding for pilots mentally as well as physically.
文摘What is the nacelle?什么是“舱”?Nacelle comes from the French word nacelle'which is the gondola or wicker basket suspended beneath a ballon.By analogy,many things that are outside the body of an aircraft,including the compartments that house the engines,can be called nacelles.“舱”来自法语单词“nacelle”,本义是贡多拉(传统划船)或悬浮在气球下的柳条吊篮。
文摘What is agyroscope?A gyroscope is a device which has a spinning disc mounted on the base so that the disc can move freely in more than one direction and the orientation remains unchanged irrespective of the movement of the base.
文摘What is a solar panel?A solar panel,also called photovoltaic panel.is a devicethat directly converts the energy of light from the sun,whichis composed of particles of energy called'photons',intoelectricity that can be usedto power electrical loads such as satellites.
