理论计算机科学 可计算性与计算复杂性 释文 lexicographical order 词典序
- petrified wood
- Petri net
- Petri net language
- Petri net model
- Petri net with inhibitor arc
- Petri polygon
- Petri网
- Petri网模型
- Petr Nikitich Tkachev
- Petr Nikolaevich Fedoseev
- Petr Nikolaevich Krasnov
- Petro-Canada
- petrochemical complex fire
- petrochemical industry
- petrochemical industry catalyst
- petrochemical plant fire
- petrochemicals
- petrochemical safety
- Petrochemical Technology
- petrochemical wastewater
- petrochemistry
- petrocole
- petrofabric
- petrofabrics
- petrogenetic grid