When the strain is below 0.29, the average grain size decreases obviously with the increase of strain.
当应变小于0.29时，平均晶粒尺寸明显地随应变增大而减小；
Ultrasonic velocity measurements have been used to estimate average grain size in TA2 ship titanium alloy.
通过对超声纵波声速的测量来评定船用TA2钛合金的平均晶粒尺寸。
Nevertheless, after the strain reaches 0.29, the average grain size decreases slowly with the increase of strain.
当应变达到0.29时，平均晶粒尺寸缓慢地随应变增大而减小。
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