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d라이브러리
"useful"(으)로 총 36건 검색되었습니다.- 원자 하나씩과학동아 199007
- were large enough to skip over atoms and not show them.Some chemists insisted, therefore, that although atoms were a useful concept, they did not necessarily exist. After all, it is helpful to ...
- 타조알과 인류의 나이과학동아 199007
- cooler than in Africa, it is possible that ages of up to 1,000,000 years can be determined.It is, of course, very useful to know how old relics might be, but, in particular, we might now be ab ...
- 우주의 형성과학동아 199006
- the dilemma that astronomers now face.But working with assumptions and equations on paper may not be enough. It may be useful to attempt a more direct attack--to actually try to create a univer ...
- 우주적 위험과학동아 199005
- once in a while, one can be actually useful. The process of evolution proceeds by the random production of such rare, useful mutations.Without cosmic rays, some think, evolution would be ...
- 없앨 수 없는 것(플라스틱)과학동아 198912
- 유용한 것이다. 나는 해결책을 찾는 노력을 계속 해야 한다고 생각한다.Plastics are so useful. They are light. They are strong. They are cheap. They can be easily molded into any shape. They don't rust or discolor or rot or g ...
- 공룡의 죽음-열쇠가 되는 아미노산과학동아 198911
- that the enzymes of living things make amino acids that are all left-forms. Left-forms fit together easily to make useful chains for the formation of protein molecules. Left-forms and right-for ...
- 마지막 남은 청정지역과학동아 198906
- The Antarctic region is valuable to the people of Earth because of its ecological role and as a mine of information useful to science. In addition, we have a responsibility to try to protect an ...
- 유전자 연구계획과학동아 198905
- to the eyes and hair, different shapes to noses and chins, different appearances in height and structure. It would be useful to identify the important varieties so that every individual can be ...
- 대기권 밖의 망원경과학동아 198904
- planets circling other stars, but the eye beyond the air may give it to us.The Hubble space telescope may even give us useful information about objects that are much closer than the stars, obje ...
- 최초의 언어과학동아 198903
- by Vitaly Schevoroshkia of the University of Michigan, who has been doing research on the subject.It would be a useful endeavor, too, for if you could work out how human language evolved, it is ...
