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兽医流行病学实验研究
释义
兽医流行病学实验研究
Encyclopedia
农学
兽医流行病学
释
veterinary epidemiological experimental study
兽医流行病学实验研究
将所研究因素人为施加于动物群组,与不施加因素的动物群组进行比较,分析所施加因素产生效果的研究方法。
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vegetation classification method
vegetation classification principles
vegetation classification system
vegetation coverage
vegetation cover and biological factor
vegetation ecological climatology
vegetation ecological series
vegetation ecology
vegetation evolution
Vegetation Formation
Vegetation Formation Group
vegetation geochemical survey
vegetation-habitat classification by Shenxiu Jia
vegetation index
vegetation investigation
vegetation map
Vegetation Map of the People's Republic of China(1︰1000000)
vegetation mattress
vegetation measures for soil and water conservation
Vegetation of China
vegetation pattern
vegetation patterns
vegetation physiognomy
vegetation primary succession
vegetation productivity
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