理学 系 释 system 系 级别小于界，大于统的年代地层单位。
热学、统计物理学 统计物理学 system 系[统]
corollary 系†，推论；推论的 porism 系；推论；不定设题
数据库 数据库理论 释文 set 系
- Jack polynomial
- Jack polynomials
- Jack S Kilby
- Jack Snyder
- Jackson
- Jackson crater
- Jackson difference fan
- Jacksonian Democracy
- Jackson identity
- Jackson inequality
- Jackson kernel
- Jackson network
- Jackson Pollock
- Jackson singular integral
- Jackson-Slater identity
- Jackson theorem
- Jackson type inequality
- Jackson type theorems
- Jacksonville
- Jack the Ripper
- jack-up platform
- Jack William Szostak
- Jacob
- Jacob (Aall Bonnevie) Bjerknes
- Jacob August Riis