Methods the strains were isolated using gradient dilution and streak plate techniques and the activity was determined by Oxford cup method and paperdiskmethod.
方法梯度稀释与划线法分离菌株，并利用牛津杯法和纸片法测定其抗菌活性。
2
This paper presents a new method to design the disk CAM with concave follower, and finds the relationship between the new kind of CAM and the formal ones.
找出了凹圆弧底直动从动件盘形凸轮与原有凸轮之间的区别与联系，并统一了原有凸轮的设计方法。
3
Manufacturing method of computer floppy disk liner for nonwovens is introduced simply in this paper.