指试样的初始厚度与在规定时间、规定温度下压缩后，经过规定恢复时间的试样最终厚度差异。
The initial thickness and in the specified time, the prescribed temperature compressed specimen, specimen thickness difference after the prescribed final recovery time.
指试样的初始厚度与在规定时间、规定温度下压缩后，经过规定恢复时间的试样最终厚度差异。
The initial thickness and in the specified time, the prescribed temperature compressed specimen, specimen thickness difference after the prescribed final recovery time.
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