Take the mean value of dimensional change rate of the 3 test pieces in longitudinal or transverse directions as the test result.
分别计算3块试件纵向或横向的尺寸变化率的平均值作为纵向或横向试验结果。
Take the mean value of dimensional change rate of the 3 test pieces in longitudinal or transverse directions as the test result.
分别计算3块试件纵向或横向的尺寸变化率的平均值作为纵向或横向试验结果。
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