In this paper, a new development of multifilar helices for BWT is proposed.
本文提出了返波管用多螺旋线的新发展。
The object of value distribution is not wealth BWT value.
价值分配的对象是价值,不是财富。
Conclusions it is very important to exclude BWT in the first diagnosis. Local radical operation has positive correlation with increase of long-term survival rate of patients with BWT.