This paper demonstrates elements contents of soil in BeiJing City and the high grade and yield of crops has closely relationship with the following soil chemical elements.
论述了北京市土壤元素含量和农作物优质高产与土壤环境中化学元素有密切的关系。
Introduce the way of high grade and high yield that brew vinegar in solid state whit the craft and the experience.
以固态法酿醋工艺结合经验介绍固态法酿醋的优质高产措施。
Conclusion: Getting rid of alabastrums in breeding season we will gain hige - grade and high-yield medicinal herb.
结论：生育期内除去花蕾，才能获得优质高产药材。
The results show that, to reach the same grade of KCl, column flotation has the advantage of simple operation process and high yield of potassium.
实验结果表明，在达到同样的氯化钾的品位的条件下，柱浮选比槽式浮选具有操作流程简单，钾的收率高等优点。
The results show that, to reach the same grade of KCl, column flotation has the advantage of simple operation process and high yield of potassium.
实验结果表明，在达到同样的氯化钾的品位的条件下，柱浮选比槽式浮选具有操作流程简单，钾的收率高等优点。
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