The definition of the word astronaut is: astronaut y·ǔ· Han Ewan (1) is a person who is sailing or being trained and will sail outside the earth's atmosphere. The phonetic notation is ㄩˇㄤㄩㄢ _. The part of speech is: noun. The pinyin is y ǔ há ngyuá n. The structure is: space (upper and lower structure) navigation (left and right structure) personnel (upper and lower structure).
What is the astronaut's specific explanation? We will introduce you through the following aspects:
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Astronaut (astronaut occupation) Astronaut, or astronaut, is called cosmonaut, and refers to people who take space flight as their occupation or have flown in space. The criteria for determining space flight are not completely uniform. In the United States, people who travel above 80 kilometers (50 miles) above sea level are called astronauts. The space flight defined by the International Aviation Federation (FAI) needs to exceed100km. By April 18, 2004, 440 people had spent 27,082 crew-days in space and enjoyed 98 crew-days through spacewalking according to the definition of * * * in the United States. According to the definition of the International Aviation Federation, only 434 people meet the requirements. The astronauts who went into space came from at least 32 countries. In Hong Kong and Southeast Asia, astronauts are also called astronauts. As of 20 13, only the former Soviet Union/Russia, the United States and China have the ability to launch manned space missions. Astronauts from other countries need to cooperate with the above three countries to complete manned space missions. Since the first human flight in 196 1, astronauts from 38 countries have successively flown.
Synonyms about astronauts
astronaut
About astronauts
astronaut
Idioms about astronauts
Carve a wall, Yu Jun Southern Airlines rides in the north, and foreign officials are well equipped. Sailing across the ocean, sailing, sailing, sailing, members of the ladder can sail in Zhanshan.
About astronauts
Extraordinary members of the ladder navigation equipment whipped the bodies of foreign insiders. The flight ladder of China Southern Airlines rides north and sets sail. Party member can be carved by the opposite teacher.
Sentence-making about astronauts
He wants to be an astronaut and devote himself to the research of space science.
During the three spacewalks, the astronauts worked almost day and night for a week.
3. Chinese astronauts walk on the moon; After a global foreign exchange shock, the world was divided into several currency groups; Even robots can vote.
No, astronauts landed on the moon easily.
Russian astronauts walked in space and installed shelters for the International Space Station.
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