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The eutectic concentration of carbon is 0.76%
The eutectic concentration of carbon is 0.76%
A.正确
B.错误
正确答案：错误
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材料导论
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From the iron-carbon phase diagram, which of the following phases/phase combinations is present for a steel composition of 0.7wt % C at 700°C
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（）is usually performed after quenching