repetitive stress

Long term repetitive action stress can lead to Carpal Tunnel.

长期的重复行动,强调可导致腕隧道.

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As the stretch to reach all areas of the screen increases, we might start to see more serious repetitive stress injuries ─ likely to the thumbs ─ in larger touch-screen devices,' says Anthony Andre, a professor of human factors and ergonomics at San Jose State University.

圣何塞州立大学（San Jose State University）人因工程学教授安德烈（Anthony Andre）称，由于触控全屏需增加拉伸的幅度，我们可能会开始看到越来越多由大型触屏电子设备引发的严重重复性劳损，例如对拇指的损害。

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Further studies show that repetitive stress induced y →ε martensitic transformation and its reverse transformation in the cyclic course can enhance the fatigue life of Fe-Mn-Si shape memory alloy by reducing crack-tip stress, restraining plastic sliding deformation and delaying the formation and extension of microcracks.

循环过程中的应力诱发马氏体正、逆相变及其相变伪弹性能降低应力集中，抑制塑性滑移变形，减少微裂纹形成的几率，从而提高Fe-Mn-Si形状记忆合金的应变疲劳寿命。

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