d라이브러리
"over"(으)로 총 134건 검색되었습니다.
- 빛의 굴절과학동아 l1991년 04호
- perfect gravitational lens or, as it is sometimes called, an "Einstein ring." Now a second Einstein ring has been discovered, and the astronomers have been able to tell how far away the quasar ...
- 허블 망원경이 찍은 대폭풍과학동아 l1991년 03호
- but it was on the other side of the planet. The HST turned to look at other things and it was weeks before the discovery was made from Earth.Once the Great White Spot began its enormous growth ...
- 블랙홀이 지구에도 있는가?과학동아 l1991년 01호
- the older ones of which, having passed beyond the hot spot, are extinct.The Hawaiian islands have been formed over one of these hot spots, and the volcano on the island of Hawaii itself, the m ...
- 로봇 곤충들과학동아 l1990년 12호
- more uniformly and efficiently than a human arm run by an over-specialized brain can possibly do. And the robots, moreover, never get tired or bored.Naturally, such robots are going to b ...
- 생명체의 분류과학동아 l1990년 12호
- us in our place. After life began, about 3.5 billion years ago, life forms remained single-celled and prokaryotic for over two billion years. Only about 1.4 billion years ago, the third grand d ...
- 금이 없다!과학동아 l1990년 11호
- are 1, 500 tons of gold, this would come to about $1.725 trillion.In the past, such a sum would have caused a stir over "untold wealth, " but, unfortunately, the wealth is no longer untold. The ...
- PARTⅠ 가변기구와 전자제어 전성시대 '자동차'과학동아 l1990년 11호
- 전자제어기술의 발달과 더불어 최근 급격히 그 활용처가 확대되고 있다. 특히 DOHC(Double Over Head Camshaft) 4밸브엔진의 설계기술은 급속히 발달, 신개발 엔진들은 모두 DOHC 4밸브 엔진이라 해도 지나치지 않을 정도다.일본의 MMC는 세계 최초로 미니카용 5밸브엔진(5백48cc)을 개발하는데 성공했다. 이 ... ...
- 도도새 같은 죽음과학동아 l1990년 11호
- have been influenced by the common statement that it was larger than a turkey, so that one thinks of domesticated, overfed turkeys. (Who knows! If dodos had been saved, we might now have dodo f ...
- 보이지 않았던 별과학동아 l1990년 09호
- moon was in the sky nearby. Robbins and Westmoreland believe that the star near the rabbit signifies that. Moreover, there are 23 rays emerging from the star and that may represent the 23 days ...
- 마지막 입자과학동아 l1990년 09호
- they will be ready to smash particles at higher levels of energy than they had disposed of hitherto. They hope to discover particles containing top — quarks among the debris.If they can't dete ...
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