crossv.穿过；交叉；杂交；反对；勾掉；碰见；阻挠n.十字架；十字形；杂交动植物；苦难adj.交叉的；相反的；生气的；杂交的cross rolls斜置轧辊,横轧辊

1. In this paper,densification laws of rotary forging powder sintered preforms and the property of components have been investigated with orthogonal experiment method.
   本文利用正交实验等方法在自行设计的实验装置上对粉末烧结体的摆辗致密规律及压实体的性能进行了研究。
2. According to orthogonal experiments,thick salt method and thin alkali method for extraction of ribonucleic acid from waste yeast were compared.
   通过正交实验对浓盐法和稀碱法提取啤酒废酵母核糖核酸进行了比较。