...防裂新途径；大体积混凝土 [gap=829]Key words：theromal stress；temperature control；MgO expansive concrete；crack control measure；mass concrete.
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control measure of crack 裂缝控制
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In the processing process in the bearing ring, through to the grinding crack mechanism analysis, the effective measure of control grinding crack was adopted.
在轴承套圈的磨加工过程中，通过对磨削裂纹机理的分析，采取有效的措施控制磨削裂纹的产生。
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