“标引”造句
标引工具书是主题
标引时必不可少的参考工具书.
Indexing reference books are the essential tools for subject indexing.
摘要
标引关键词是科技论文的基本要求.
Indexing of key words is required by sci - tech research papers.
自由
标引本身存在着缺点,克服缺点的最佳方法是后控制技术.
Free marking has some fault which can be conquered by post - control technique.