理论计算机科学 可计算性与计算复杂性 释文 complete problem 完全问题
- principal norm
- principal normal
- principal normal complex
- principal normal form
- principal normal line
- principal normal plane
- principal normal section
- principal normal surface
- principal normal vector
- principal number
- principal nutation
- principal object
- principal offender
- principal of land laws
- principal of least dissipation of energy
- principal open set
- principal optical axis
- principal orbit
- principal orbit type
- principal order
- principal order module
- principal parabola
- principal parameter
- principal part
- principal partition