理论计算机科学 算法设计与分析 释文 performance ratio of an approximation algorithm 近似算法的性能比
- biodegradable packaging
- biodegradable plastics
- biodegradable polymer
- biodegradable polymeric materials
- biodegradation
- biodegradation of pollutants
- biodegradation of polymer
- biodegradation of surfactant
- biodemography
- bio-deodorization during composting
- biodeposition
- BIODEPTH
- biodetection
- biodeteriorative microbiology
- biodetoxification
- biodiagenesis
- bio-diesel
- biodiesel
- biodiesel prepared by emulsification
- biodiesel prepared by transesterification
- biodiesel technology
- biodiversity
- Biodiversity and Ecological Processes in Terrestrial Herbaceous Ecosystems
- biodiversity and ecosystem functioning experiment：BEF experiment
- biodiversity conservation