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北京农业大学研究院和沈阳前榆科教仪器厂承担农牧渔业部科技司安排的新产品开发项目,共同研制了 SI—841型数字叶绿素仪。已于1984年6月20日,由农牧渔业部科技司委托的中国农业科教仪器公司主持,在北京农业大学通过了样机的鉴定。在京科研单位和高等院校的有关专家及同行组成了领导小组、仪器测试小组和技术资料
Institute of Beijing Agricultural University and Shenyang Qian Yu former science and education equipment factory to undertake the Ministry of Agriculture, Animal Husbandry and Fisheries Division of new product development projects arranged jointly developed SI-841 digital chlorophyll meter. On June 20, 1984, China Agricultural Science and Education Instrumentation Company entrusted by Science and Technology Department of Ministry of Agriculture, Animal Husbandry and Fisheries presided over and passed the identification of prototype at Beijing Agricultural University. In Beijing research institutes and institutions of higher learning relevant experts and peers formed a leading group, instrument testing team and technical information