requirement 要求，需要
理论计算机科学 可计算性与计算复杂性 释文 requirement 需求 软件工程 释文 requirement 需求
- Piscis Australids
- Piscis Austrinus
- pi-separable group
- Pisha Ji
- Pishan (Guma) Xian
- PiSha Record（A guide to the study of the history of Chinese economic thought by Zhao Naituan）
- Pishihang Irrigation District
- pishu
- Pi Shushi
- p isobutylhydratopic
- p-isobutylhydratopic
- pi solvable group
- pi-solvable group
- Pisot
- Pisot constant
- Pisot number
- Pisot sequence
- Pisot-Vijayaraghavan constant
- pi-squared π2
- pistachio
- Pistacia chinensis seed oil
- pistil
- pistillate flower
- pistillode
- Pistol Nebula