＞数理逻辑与数学基础＞递归论＞释义 arithmetical hierarchy 算术分层 arithmetical hierarchy 算术分层†，算术谱系
理论计算机科学 可计算性与计算复杂性 释文 arithmetical hierarchy 算术层谱
- wagons slope
- Wagstaff conjecture
- Wagstaff prime
- Waguan Temple
- wag vibration
- Wahbī Yusūf
- Wahdah al-Shuhud
- Wahl
- Wahlund effect
- Wahlund's principle
- Wahson electric fan
- Wahuanggong Caves
- Wahuang Palace Scenic and Historic Area
- Waibaikal Mountains
- Wai-Ching Yu
- Waidiaoshan Dao
- Waifang Shan
- waiguan
- Waiheke Island
- waihuaijian
- waijiang opera troupe
- Waikato River
- Waikejiao Dao
- Waike Jingyao
- Waike Zhengzong