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- DP2电流系DP2 current system
- 系system
- Sq电流系Sq electric current system
- 扰动电流系Disturbance current system
- 等磁效电流系magnetic equivalent current system
- 等效磁电流系magnetic equivalent current system
- 院系department
- 系上to buckle up
- 系带chalaza
- 中文系department of Chinese language and literature
- 菜系style of cooking
- 系的phyletic
- 科系department
- 系动词copula
- 全系holophyly
- 外语系department of foreign languages
- 家系stemma
- 报系syndicate
- 色系colour system
- 数学系department of mathematics
