理论计算机科学 可计算性与计算复杂性 释文 probabilistic logspace hierarchy collapses 概率对数空间层谱塌陷
- helium-rich core
- helium-rich star
- helium separation system
- helium shell
- helium shell flash
- helium star
- helium-strong star
- helium variable
- helium-weak star
- helium white dwarf
- He Liutang
- helix
- helix angle
- helix array
- helix chain
- helix-coil transition
- helix feed
- Helix Galaxy
- Helix Nebula
- helix slow wave circuit
- helix spline
- helix travelling wave tube
- hell
- Hella Maria Wuolijoki
- Hellas