理论计算机科学 可计算性与计算复杂性 释文 NP-hard problem NP困难问题
- etherification of polymer
- ether-ketone
- ether-ketone-ketone
- ether mixed fuel
- Ethernet
- Ethernet access
- ethernet over coax
- ethernet passive optical network
- ethernet protocol
- ethernet tester
- ethernet train communication network
- ether poisoning
- ethers compound poisoning
- ether sulfone
- ether-urethane
- ether wind
- Ethic
- ethic
- ethical and moral
- ethical behavior pattern
- Ethical chaos
- Ethical choince
- Ethical Code of the Bulgarian Media
- ethical complaints
- Ethical confusion