d라이브러리
"world"(으)로 총 202건 검색되었습니다.
- 「군사비 줄여야 환경보호 여력생겨」과학동아 l198805
- 건강이 더욱 악화되고 있음을 나타내 주는 증거. 환경보호를 위해 생겨난 월드워치(World-watch)회장 '레스터 브라운'씨는 최근 시사 주간지 뉴스위크와의 회견에서 환경이 악화되면 지구에서의 생존자체가 어려워 질뿐 더러 단기적으로는 세계 경제도 붕괴될수 있다고 지적하고 환경문제의 개선은 ... ...
- 우주의 비밀을 알려줄 폭발과학동아 l198804
- material of the same mass.Scientists can produce tiny fragments of antimatter in the laboratory but in the natural world, we have about us only matter. The moon is matter, too, or our astronaut ...
- 가장 생명력이 강한 것과학동아 l198803
- planet who was examining Earth dispassionately might well report back to his superiors that Earth was an insect world with an unimportant scattering of other types of life as well.Consider that ...
- 태양계의 종말은?과학동아 l198803
- wisps of gas of the sun. Even though the Earth will be lifeless at this time, it may comfort us a bit to know that the world that was our home might still continue to exist.However, the Earth w ...
- 시베리아에서 있은 폭발과학동아 l198801
- ordinary matter of Earth's crust, leaving nothing behind. Or it might have been a nuclear spaceship from some other world that exploded. Such alternate explanations, however, were never taken s ...
- 책의 혁명과학동아 l198712
- symbols were carved into lumps of clay with a stylus and the result was then baked into an artificial stone. The world's oldest surviving epic, that of Gilgamesh, appeared in that form. Other t ...
- 가장 중요한 화석과학동아 l198711
- The feathers are in a double row down the length of the tail, and are also present along the fore-limbs.In the world today, every known bird has feathers, and all living things that are not bi ...
- 연료만들기과학동아 l198710
- s frist source of energy boyond his own muscles was fire, the burning of fuel that could be easily located in the world about him. We may progress to other sources of energy ― solar, unclear fu ...
- 에너지가 있는 곳으로과학동아 l198709
- The common desire to make use of this energy and to maintain and improve the stations should give the nations of the world a vital project to rally round and impose a greater feeling of common ...
- 기상정보시스템 주관예보체제를 극복한다과학동아 l198702
- 및 현재의 가상상태 확인까지의 과정을 분석이라 일컫는다. 방대한 양의 관측자료는 WMO(World Meteorological Organization:세계기상기구)의 규정에 의거 가장 경제적으로 조합된 암호체계를 갖고 국제적인 송수신을 거치게 된다. 가장 효율적으로 함축되었음에도 우리나라 중앙기상대의 경우 1일 1백만자 ... ...
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