The experimental results show that the hydrostaticextrusion 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.