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- 变精度双向IS-粗集variable precision two direction improper singular rough sets
- 变精度双向变异S-粗集与它的变异结构Two-direction Variation S-Rough Sets of the Variable Precision and Its Variable Structure
- 变精度双向变异S-粗集variable two-direction S-rough sets
- 双向IS-粗集improper double direction singular rough sets
- 不变的unchangeable
- 变精度粗集variable precision rough sets
- 变小lessening
- 变大fill out
- 粗的thick
- 保持不变hold the line
- 并集union of set
- 群集throng
- 变老ageing
- 变坏go to the bad
- 产业集群industry cluster
- 变心cease to be faithful
- 杂集miscellany
- 字集character set
- 变暖warming
- 全球变暖global warming
