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情报检索系统
专门进行情报收集、处理、存储、检索并满足用户情报需求的系统。
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grassland rodent predators
grassland rodents control
grassland runoff aggregate measures
Grasslands and Forage Abstracts
grassland sand prevention
grassland scansores
Grassland Science
grassland shallow ploughing
grassland sightseeing tourism
grassland silk road
grassland small catchment
Grasslands National Park
grassland sod scarification
grassland soil animals
grassland soil microbes
grassland soil-plant-atmosphere continuum
grassland soil resource
grassland songbird
grassland state-transition model
grassland system engineering
grassland tea-horse trade
grassland terrestores
grassland tourism
grassland type
grassland type of south American
科学参考收录了854744条科技类词条,基本涵盖了常见科技类参考文献及英语词汇的翻译,是科学学习和研究的有利工具。
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