The amplitude and gradient of MMMT signals not only relied on the average stress of the shell, but also relied on the local stress concentration.

由此证明磁记忆信号的幅度和梯度既与材料所处的整体应力有关，也与该部位的局部应力集中度有关。

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The results show that the branch pile can reduce the deformation of the upper structure, but may cause local stress concentration in the superstructure.

研究结果表明，支盘桩可以有效降低上部结构的变形，但可能在上部结构产生局部应力集中。

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The nonuniformity in filling ability of the material to different parts of die cavity leads to the unequal distribution of die stress and local stress concentration.

模具型腔各部分材料填允能力的不一致，是导致模具应力不均匀、局部出现应力集中的主要原因；

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