数据库 数据库新技术 释文 inverse document frequency, IDF 反文档频率
- sterculia
- sterculia gum
- sterculic acid
- stere
- STEREO
- stereo
- STEREO A
- stereo acuity
- stereoacuity
- stereoautograph
- STEREO B
- stereobase
- stereoblock
- stereocampimeter
- stereochemical
- stereochemical formula
- stereochemical isomerism
- stereochemical isomers
- stereochemical structure analysis of pharmaceutical
- stereo-chemical structure of macromolecular chain
- stereochemistry
- stereocilium
- stereocomparagraph
- stereo-comparator
- stereocomparator