[说明]1．基本采用《机械工程叙词表（第二版）》；根据本行业检索需要，增添了部分叙词。2．文献号由6位阿拉伯数字组成，如980241。左起第一、二位数字（98）表示该论文在《轴承》上刊登的年份（1998年）；第三、四位数字（02）表示期数（第2期）；第五、六位数字（41）表示 [Description] 1. The basic use of “mechanical engineering Thesaurus (second edition)”; based on the industry search needs, added some of the descriptor. 2. Document number consists of 6 Arabic numerals, such as 980241. The first and second digits from the left (98) indicate the year (1998) in which the paper was published on “bearings.” The third and fourth digits (02) indicate the number of periods (second period). The fifth and sixth digits The number (41) indicates