d라이브러리
"dry"(으)로 총 22건 검색되었습니다.
- 꽃가루의 힘과학동아 l199311
- water or air to fertilize the eggs. If using air, more evolved plants package the sperm in pollen grains so they won't dry up. The various ways in which plants succeed with pollen is remarkable ...
- 안정동위원소 이용한 석유탐사 새기술과학동아 l199311
- 보다 더 깊은 곳에서는 기원물질이 열적 분해로 고탄화수소 가스 성분, 즉 드라이가스(dry gas)로 전이 한다(그림 4). 이러한 기원물질의 전이가 성숙(maturation)이며, 성숙의 정도는 광학적 특성, 즉 비트리나이트 반사도에 의해 구분되고 있다. 광학적인 특성은 기원물질의 성숙 상태의 평가에 중요한 ... ...
- 강 여행과학동아 l199311
- perch on anything jutting from the river. With wings that are not waterproof, the cormorant must spread them out to dry.In many countries, people use cormorants as fishing helpers. Cormorants h ...
- 모두를 위한 남극과학동아 l199307
- supercontinent. The Antarctic fossils are evidence for the idea that Earth's continents move around.Even now, in the dry valleys between Antarctica's mountains, there is life. Biologist Diana W ...
- 화성에도 물이?과학동아 l199306
- for what looks like evidence of the former presence of a good deal of water. The ground seems to be marked by old, dry river valleys. Features that may indicate the current presence of subsurfa ...
- 아라크네의 자식들과학동아 l199209
- Spiders are ancient animals. Their Devonian period ancestors were some of the first creatures to walk on dry land, 400 million years ago. Most spiders serve us well by eating insects we'd rath ...
- 식어가는 온천과학동아 l199110
- the United states is expected to be about 10 times the heat energy of all U.S. coal deposits.Engineers drill into the dry, hot rock and fracture it. They then send down water, which comes up ag ...
- 금이 없다!과학동아 l199011
- various dissolved materials in ocean water in addition to salt, the major component. Even allowing for this occasional drying and removal, a little bit of every known element is found in ocean ...
- 지구가 너무 덥고 추웠을 때 When The Earth Was Too Hot and Too Cold과학동아 l199001
- so far from the ocean that the rains could rarely reach it no matter which wind was blowing, making it too hot and dry to sustain life.It was fortunate, then, that Pangaea broke up (as it alway ...
- 기상의 인공조절, 이상과 현실과학동아 l198808
- 방법이다.인공가우의 방법으로는 비행기를 타고 공중에 올라가서 구름에 드라이아이스(Dry Ice)를 뿌리거나 물을 분무기로 뿌려주는 방법이 있다. 또 옥화은(Agl)을 지상에서나 비행기에서 태워 그 연기를 구름에 닿게 하는 방법 등이 있다.옥화은을 태워서 인공강우를 하는 방법은 비행기가 없어도 ... ...
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