Scientificassociation can be divided into proximity association, contrast association, analogy association, and cause-effect association according to their nature and features.
按照科学联想的性质和特点的不同，科学联想可分为接近联想、对比联想、类比联想和因果联想四种类型。
2
The International Association of Scientific, Technical and Medical Publisher says that there are more than 2,000 publishers worldwide specializing in these subjects.
国际科学技术协会和医学出版商协会表示，全世界主营这些业务的出版商有2000多家。
3
The results of the research are being presented at the American Heart Associationscientific meeting in Orlando, Florida.