1. In the light of the inefficiency of the conventional 2 - D engagement design method for tricone bits and the untruth of the 2 - D engagement chart, a new Program for bit engagement design is develope. �����������ͷ��ͳ�Ķ�ά������Ʒ����ĵ�Ч�ʺͶ�ά����ͼ�IJ���ʵ�ԣ�������һ����������ͷ��������³���
2. Since the gear engagement is a common coupling form between rotors, the transfer matrix of skew gear engagement in global coordinate system is deduced based on the concept of coupling element. ����������ת��֮�䳣����һ�������ʽ��������ϵ�Ԫ�ĸ���Ƶ�����ȫ������ϵ��б�������ϵĴ��ݾ���
3. On the basis of the engagement principle of spatial curved surface, the engagement features of the toroidal drive are systematically studied. ���ÿռ��������۶Գ����������ϸ˴������������Խ�����ϵͳ���о���
4. Since the gear engagement is a common coupling form between rotors, the transfer matrix of skew gear engagement in global coordinate system is deduced based on the concept of coupling element. ����������ת��֮�䳣����һ�������ʽ��������ϵ�Ԫ�ĸ���Ƶ�����ȫ������ϵ��б�������ϵĴ��ݾ���
5. product:pp film non-woven bags, non-woven bags, pp film non-woven fabrics, non-woven fabric, apron, product all kinds of non-woven bags. רҵ��������Ĥ�IJ������IJ�������Ĥ�IJ����IJ���ΧȺ�����ָ�������������