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Simulation of the fretting failure with the coexistence of dust particles and sodium lactate confirmed that the sodium lactate could result in high contact resistance.

失效模拟实验证实乳酸钠与尘土颗粒结合可以加速电接触失效。

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Prof. Zhang holds that double involute gear with ladder-shaped teeth possesses the advantages of good technology, high bending strength, high contact strength and fewer teeth.

张光辉教授认为：分阶式双渐开线齿轮具有良好的工艺性能、弯曲强度和接触强度高、最少齿数小等优点。

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Children come in contact with high levels of pesticides through farming.

VOA: special.2010.05.26

But supporters say there is more to high-contact sports such as boxing or MMA than an attraction to violence.

CNN: Fans attracted to 'forbidden fruit' of violence

In other high-contact sports, several former boxers and football players have developed traumatic brain injuries believed to be caused by repeated blows to the head.

CNN: Fans attracted to 'forbidden fruit' of violence

High-contact sports can also exact a toll on players.

CNN: Fans attracted to 'forbidden fruit' of violence