本文根据出土的稻谷、东汉时期的水田模型、一部分史料及一些老人的回忆等来分析、推测云南古代水力机械出现的大致时间,并简要描......

The air-dried density, bending strength (MOR) and compressive strength parallel to grain of different grades of rotten w......

临床药师对2013–2014年婴幼儿病区使用万古霉素的患儿进行血药浓度监测,根据监测结果进行调整用药剂量。此文章对监测结果进行分......

As a very important component of a coastal system,tidal flats come to be a focus of the studies on land-ocean interactio......

Soilless culture in China has developed rapidly in recent years. The area of soilless culture in China was about 0.1 ha ......