d라이브러리
"made"(으)로 총 127건 검색되었습니다.
- 우주의 형성과학동아 l199006
- surround huge "voids" within which there are practically no galaxies. It is as though the universe were a vast sponge made up of galactic structures surrounding holes.How could the universe hav ...
- 종족의 보존과학동아 l199006
- 1990년도 초반을 살아가는 우리는 멸종했다는 동물들이 살아있다거나 멸종위기에 처해 있는 동물들을 구해야 된다는 소식을 끊임없이 접하고 있다. 다양한 생명 ... the birds, growing fat and comfortable, might breed. In March one of the kakapos laid an egg, and(ital) that( ...
- 잘못된 경종과학동아 l199005
- nuclear. The fifth force, it was suggested, had very strange properties.It was reported as weaker than gravitation, made itself felt for only limited distances of a few yards and varied for dif ...
- 작은 꼬인 빛 Tiny Twisty Light과학동아 l199004
- in astronomy is the "mystery of the missing mass." In January, some astronomers reported that the missing mass may be made visible after a fashion.The missing mass belongs to objects in the Uni ...
- 1990년대의 과학과학동아 l199003
- this with any certainty, for future developments have a way of slithering out of one's grasp, despite predictions made with logic and rationality. Still, let's make some intelligent guesses.Adv ...
- 두 사람과학동아 l199003
- in France. The Aurignacian culture is associated with modern man, and the tools are much more skillfully and artfully made than are those of the Mousterian culture.l It seems certain that one d ...
- 그것은 유전자 안에 있다과학동아 l199002
- For one thing, life has existed for about 3.5 billion years . but it is only about 8 billion years ago that organisms made up of many cells formed. Perhaps evolution has not yet perfected the ...
- 화성을 다시 찾다과학동아 l199002
- body that drove pieces of Mars out into space. The colliding body may have been a comet, and comets are known to be made up, in part, of carbon-containing compounds. In that case, the meteorite ...
- 경제교류가 가져오는 것 Business Leads The Way과학동아 l199001
- were invented, which were individual notes, pieces of paper representing any quantity of money. Then credit cards made it possible to make out only one check per month.And now there are smart c ...
- 없앨 수 없는 것(플라스틱)과학동아 l198912
- kinds and cycle each separately. But that takes more time and effort. Then, too, different parts of some plastic. That made up of different types of plastic. That makes the process of separatio ...
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