Excessive vibration may lead to tube failure due to fatigue or fretting-wear.

振动，由于疲劳与磨损将导致管子的破坏。

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The dynamic effects due to vibration should be taken into account by the designer if fatigue failure is to be avoided.

为了避免弹簧的疲劳破坏，设计者应对弹簧由振动所引起的动力影响加以考虑。

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Fatigue cracking of a roller is the main failure form due to the alternate bending stress in operation.

滚圈是回转窑最重要的支承部件，运转中弯曲应力造成的疲劳开裂是其主要失效形式。

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