But in the United States in the 1930s and 1940s, he was no less valuable, if not so publicly celebrated, as a pioneer in American jet and rocket technology.

在20世纪三、四十年代的美国，即使他尚未如此名满天下，但作为美国喷气式飞机及火箭技术先驱，其价值却一样宝贵。

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This is a book which tells about rocket technology.

这是一本关于火箭技术的书。

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This is a book which tells about space rocket technology.

这是一本关于宇宙火箭技术的书。

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But he has won praise at home for his support for developing satellite and rocket technology.

VOA: special.2009.05.23

Hamada's comments follow a meeting of Japan's Security Council Friday, at which senior officials voted to approve the use of missile defense technology to destroy any part of the North Korean rocket that looks like it will land on Japan.

VOA: standard.2009.03.27

However, this process only starts happening efficiently at Mach 5, which means conventional rocket technology is required to get the scramjets to their critical operating speed.

BBC: Experimental jet 'a success'

The intention was to give the US a crew-carrier and rocket technology that could go beyond low-Earth orbit to more distant targets, back to the Moon and further.

BBC: Obama reviews post-shuttle plans

Rocket technology is also advancing.

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