全部

1·The experimental results show that the hydrostatic extrusion strengthening results from high dislocation density.

实验表明：材料挤压强化主要是形成位错密度很高的胞状结构。

2·The process is one of active motility rather than passive extrusion by the hydrostatic pressure of the blood.

这个过程是主动运动，而不是由血液的流体静力压所致的被动挤压过程。

3·Compared with conventional tensile drawing and hydrostatic or ram extrusion, die drawing process has considerable advantages and developing potentials.

与传统的拉伸辊牵伸、静压挤出及柱塞式挤出工艺相比，口模牵伸具有明显的优越性和发展潜力。