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1·The author attempts to introduce some major achivements and developments of agricultural geochemistry at home and abro…

提出了近期内我国农业地球化学研究的主要任务。

2·With this resin curing system, a pre impregnating was obtained and the glass clothing composite had good mechanical properties and moisture resistance as the same product of abro…

用该树脂体系可湿法制作复合材料预浸布，其玻璃布复合材料在力学性能和耐湿热性能上可达到国外同类产品的水平。