<{p}>45钢在水和油中冷却时，其相应临界淬透直径D<{sub}>0<{/sub}><{sub}>水<{/sub}>和D<{sub}>0<{/sub}><{sub}>油<{/sub}>的关系是D<{sub}>0<{/sub}><{sub}>水<{/sub}><D<{sub}>0<{/sub}><{sub}>油<{/sub}>。<{br/}><{/p}>
发布于 2021-03-27 00:39:41
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