The composition of solid adhesive is discussed, and gives three kinds of new solid adhesives which have the ability of good effect, low cost and simple synthesis condition.
讨论了固体文具胶的组成并给出了效果良好、成本低廉、合成条件简单的三种新型实用配方。
This paper introduces three kinds of CNC turning method combined with practical example, concentric circle turning, center shifting turning and taper profile composition turning.
文章结合编程实例介绍了球弧数控车削三种常用的工艺方法，即车圆法、移圆法、车锥法。
This paper has studied the relation of the leaf dropping with orange yield and three kinds of orange disease's influence upon leaf dropping, leaf mineral nutrition and fruit-content composition.
本文研究了柑桔叶片脱落与产量的关系及三种柑桔病害对叶片脱落、叶片矿物质营养和果实内含物的影响。
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