Internal fatigue cracks occurred in the fracture of a quenched and tempered carburized steel specimen under tension-tension fatigue loads are discussed in this paper.

本文对淬火加回火渗碳钢的拉伸一拉伸疲劳断口进行了内裂纹的分析和研究。

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When sleep is disrupted or frequently inadequate it increases tension, irritability, fatigue, less exercise, and a lower level of vitality and fitness.

睡觉的时候被打扰或是长时间的睡眠不足就会引发焦虑、易怒、易感到疲劳，运动少，没活力和健康水平较低。

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Research reveals that views of trees, lawns, flowers and water can banish tension, fatigue and anxiety by lowering our heart rates and reducing muscle tension.

研究表明，看到树木、草坪、鲜花和水能助人降低心跳速度，降低肌肉紧张程度，进而驱除紧张、疲倦和焦虑。

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Still, there's a sense of fatigue in the scenes that don't involve high-tensile webs and high-tension suspense.

WSJ: Film Review