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[期刊论文] 作者：Zhao Zhengwen,Ma Jifeng,Li Xia,
来源：湖南农业科技通讯(英文版) 年份：2000
There are three ecotypes of soybean cultivar in Hunan Province: spring soybean, summer soybean and autumn soybean. Spring soybean has become the leading cultiva...
[期刊论文] 作者：Jun WU,Jian WU,Haisheng ZHAO,Zhengwen XU,
来源：黑龙江科技信息 年份：2017
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Altitude and intensity characteristics of parametric instability excited by an HF pump wave near the
[期刊论文] 作者：Jun WU,Jian WU,M T RIETVELD,I HAGGSTROM,Haisheng ZHAO,Zhengwen XU,
来源：黑龙江科技信息 年份：2017
本文通过对荣华二采区10...
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