系统软件 操作系统 释文 user process 用户进程
- second-trace echo
- second transit
- second-type outer boundary condition
- second type surface
- Second United Nations Conference on Human Settlements (HABITAT II)
- second university reform movement in Germany
- second variation
- second variation formula
- second variation formula of arc length
- Second Vatican Council
- second virial coefficient
- second wave of Chinese newspaper publication
- second window
- secrecy
- secrecy capacity
- secrecy system
- Secret Agreementon Question of Constantinopleand Straits
- Secretariat-Chancellery
- secretariat style
- secretary-general of the United Nations
- secretary in a bureau
- secretary problem
- Secret Ballot
- Secret China
- Secret code