d라이브러리
"NOT"(으)로 총 257건 검색되었습니다.
- 보다 정확히과학동아 l1989년 11호
- enough." and go on to other things.That, however, they can never do. Every newly precise measurement merely brings another, more distant horizon, into view, one that must be striven for. After ...
- 공룡의 죽음-열쇠가 되는 아미노산과학동아 l1989년 11호
- the heat of impact? There is no easy answer to that. The amino acids are not very sturdy molecules and normally could not withstand such heat. Perhaps they existed on the inside of chunk ...
- 20년후-달의 신비를 벗기며과학동아 l1989년 10호
- the moon has developed less internal heat, and it is internal heat that keeps the crust moving and changing even if nothing else does. In other words, whereas the Earth geologically "alive," t ...
- 바라는대로 되는 것만은 아니다과학동아 l1989년 10호
- instantly repeated the experiments and confirmed the existence of nuclear fission. This time the wild and dramatic notion was true.Well, now which is it to be for cold fusion? After all, if col ...
- 녹색 식물의 탄생 How Green Plants Began?과학동아 l1989년 09호
- related.Obviously, more work is needed.The technique used in these molecular analyses, however, may come to be used not only to solve this particular problem but to work out the evolutionary de ...
- 가장 약한 파(波)―중력파 The Weakest Wave과학동아 l1989년 09호
- so that all four would be affected almost simultaneously. That would make it certain it was a gravitational wave and not something else. There would be tiny differences in the time of detectio ...
- 소행성의 근접신호과학동아 l1989년 08호
- formed perhaps 50,000 years ago as a result of a collision. It probably didn't kill anyone because human beings had not reached the Americas yet. In 1908, a much smaller strike in central Siber ...
- 초기인류의 언어능력을 말해주는 뼈과학동아 l1989년 08호
- bone falls loose and it may be deposited far away from the rest of the skeleton. In the remains that have been found, nothing remains of the larynx either, for that matter; so we can't really b ...
- 디베이스 프로그램의 기초과학동아 l1989년 08호
- Z보다 a가 더 크게 된다는 점이다.논리 연산자는 논리합(.AND.) 논리곱(.OR.) 논리부정 (.NOT.)의 3가지이다. 이들중 논리합과 논리곱은 두 개의 논리값 조합에 따라 결과를 논리값으로 내며, 논리부정은 주어진 논리값을 반대로 만든다. 그 연산표는 (표1)과 같다.디베이스에서 사용할 수 있는 ... ...
- 지하생활과학동아 l1989년 07호
- of course, the danger of fire-which may do more damage in the caverns than in the open.By the way, once again I am not a totally dispassionate observer; I happen to like enclosed spaces. Back ...
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