只要它们以向心方向保持足够迅速的移动，它们就拥有活的形体，但是随着它们倒转，向外以离心方向运动，它们就丧失了形体。
As long as they move fast enough in a centripetal direction, they have living bodies, but as they reverse to the outward, centrifugal direction, they lose their bodies.
试样内部各部位的应力大小分布不均匀，随应变速率的增大，最小应力值由自由变形的鼓形区域逐步向心部移动；
The effective stress of specimen is inhomogeneous. As the strain rate increases, the minimum stress value moves from the drum-shaped region to the heart of specimen.
试样内部各部位的应力大小分布不均匀，随应变速率的增大，最小应力值由自由变形的鼓形区域逐步向心部移动；
The effective stress of specimen is inhomogeneous. As the strain rate increases, the minimum stress value moves from the drum-shaped region to the heart of specimen.
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