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简述Ak和ɑk的区别。
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简述Ak和ɑk的区别。
时间：2022-02-24 03:32
关键词：
金属材料检测
金属技术监督上岗员
技术监督质检职业技能考试
答案解析
<p> Ak是冲断试样所消耗的功，或试样断裂前吸收的能量。<br> αk是单位面积吸收的能量，即将Ak除以缺口面积。</p>
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