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- 序S-系S-poset
- 循环序S-系Cyclic S - poset
- 序S-系的定义及简单性质Definition and Simple Properties of Ordered Left S-systems
- 系system
- 降序descending order
- 院系department
- 序数词Ordinal Numbers
- 系上to buckle up
- 倒序reverse order
- 系带chalaza
- 循序in proper sequence
- 中文系department of Chinese language and literature
- 测序order-checking
- 菜系style of cooking
- 逆页序打印reverse print order
- 系的phyletic
- 逆序negative sequence
- 科系department
- 系动词copula
- 相序phase sequence