undrew

The forestry engineering construction undrew prologue , since the central government has arranged special funds to support the four protection forests system construction from 1978 .

从1978年中央财政安排专项资金支持四大防护林体系建设起，林业工程建设拉开了序幕。

It undrew the prelude of transgenic breeding that the company of Monsanto Company obtained the first transgenic tobacco plant which had resistance to tobacco virus by transgenic technique in 1986 . Since then , over 10 R genes have been cloned and transferred into various plants .

1986年美国孟山都公司利用转基因技术获得了第一株抗病毒病的转基因烟草植株，拉开了转基因育种的序幕。自那以来，已有10多个抗病基因被克隆并转入到不同植物中。

Effects of Auricularia auricula UNDREW of selenium polysaccharide on the contents of Se and Pb and Hg in tissues of rats

黑木耳硒多糖对大鼠组织中硒、铅、汞含量的影响