主题词,关键词,主题语,是三个不同的概念。前两者大概产生于1987年,是因文件资料倍增和计算机的普遍推广应用而产生的。主题语的产生可能还要早一点。它们如同三个“孪生”姐妹,看起来貌似相同,实则各异。但不少同志往往将三者混为一谈,忽视了它们之间的不同之处。现就这个问题谈点不成熟的看法,仅供秘书同仁参考。 Keywords, keywords, subject, are three different concepts. The first two probably occurred in 1987, due to the multiplication of documents and the general popularization and application of computers. Thematic production may be a little earlier. They are the same as the three “twin” sisters, they all look the same, but actually different. However, many comrades often confuse the three with ignoring the differences between them. Now talk about this issue immature view, for reference only secretary colleagues.