The company has managed to thread a long, thin tube into the broken pipe, but that is only drawing off a fraction of the flow.
该公司已把一根长而细的软管塞进断裂的立管里，但这只能抽吸微量漏油。
2
It is put forward in this article that the cross section deformation index Q can be used to evaluate the inhomogeneity of deformation in tubedrawing.
为评价管材拉拔中的不均匀变形，提出用管材拉拔前后截面形状变化指数Q描述截面变形的不均匀性。
3
The paper introduces CAD system of steel tube cold drawing process which is a software with optimum function developed by Iron & steel General Institute on basis of computer imitation technology.