d라이브러리
"NOR"(으)로 총 32건 검색되었습니다.
- 지구가 너무 덥고 추웠을 때 When The Earth Was Too Hot and Too Cold과학동아 l199001
- zero.If one plots out the portions of Pangaea that would have had temperatures as bad as, or worse than, that of the north central portions of Siberia and Canada, it turns out that these super- ...
- 없앨 수 없는 것(플라스틱)과학동아 l198912
- and the rain soaks in. However, as the dump piles up, deep inside you get a quantity of plastic that neither sun nor water ever reaches. And you have a vision of having to stir up the whole pil ...
- 대기권 밖의 망원경과학동아 l198904
- far more clearly and in far more detail than any telescope can show us. However, no probe has yet approached Pluto ; nor will one for many years to come. The Hubble space telescope will see Plu ...
- 산불의 냉각효과과학동아 l198902
- however, was that there was a cooling effect. Daily maximum temperatures on the valley floors were lower than normal by more than 9 degrees Fahrenheit over that threeweek period. During the wo ...
- 우주여행의 방향은?과학동아 l198901
- bringing them back alive is so enormous and so barely within the realm of possibility that neither the United States nor the Soviet Union can undertake it without back-breaking efforts a ...
- 우주 오염과학동아 l198812
- no significant harm in remaining where we put them; there would be plenty of room, for the volume of space is indeed enormous.However, if they were motionless, they would all fall to the ground ...
- 중공의 우주기지와 과학자과학동아 l198806
- 실크로드 부근으로 여기에서 서쪽으로 가면 돈황(敦煌), 옥문관(玉門關), 로브노르(Lob-Nor·신강 위그르 자치구 타림분지 속의 사막에 있는 소금호수)와 누란(樓蘭)에 이른다. 처음에는 미사일 실험장으로 개설되었으며 뒤에는 동풍(東風)기지라 불렀다. 서방측에서는 이 주변의 지명을 따서 쌍성자 ... ...
- 옛 괴물들과학동아 l198802
- be up to 90 feet long and weigh up to 130 tons, twice that length and size of the largest dinosaur that ever lived. Nor is it likely that there were ever any taller trees than the redwoods of t ...
- 시베리아에서 있은 폭발과학동아 l198801
- were never taken seriously. But in early 1987, a group of Soviet investigators reported that they had detected abnormally high traces of the metal iridium in soil obtained from the impact poin ...
- 연료만들기과학동아 l198710
- be wiped out.In addition, the fuels we use are dangerous, even while plenty still exists. Both coal and oil contain minor quantities of nitrogen and sulfur atoms, which when they are burned pro ...
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