通过对比实验，研究了铝合金管材挤压时内表面出现的石墨压入缺陷的形成过程及影响因素。提出了预防此缺陷的措施。
Through some comparison experiments, the forming course and affecting factors of the pressing graphite defects of aluminium alloy pipes are studied. Some methods of avoiding the defects are presented.
通过溶剂对比实验及单因素实验和正交实验，确定了从脱脂豆粕中提取大豆异黄酮的最佳提取溶剂及最佳提取条件。
From the solvent comparison test, single factor test and orthogonal test, the optimum extracting solvent and conditions were obtained to extract soybean isoflavone from defatted soybean meal.
笔者通过油井管杆磨蚀试验机，对常用的管杆材料进行了耐磨蚀性能对比实验，并探讨了油井温度、径向载荷等因素对常用管杆材料磨蚀率的影响。
The effect of the oil temperature and the radial load on the corrosive-wear rate of the traditional tube and rod materials was studied by means of the corrosive-wear experimental tester.
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