They straighten and arch upward from their lower back, which has a nervous breakdown [anything from soreness to more permanent injury] because it's getting all the stress, "says Price."
他们从他们的腰背部挺直和拱起，这些都会造成神经性的伤害(有些从暂时的伤痛变成永久性的伤害)因为腰背承受着所有的压力。
Under a certain condition, there is a chaotic phenomenon in Permanent-magnet synchronous motors, which can lead to lose control of the system and make the system completely breakdown.
永磁同步电动机在一定的工作条件下呈现出混沌运动状态，可能导致系统失控，使系统彻底崩溃。
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