The control stress source's potency feeling has the influential role in anxious arousing.
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The paper explores social support and sense of control on relationship between source of stress and stress reaction in college students.
本研究的目的在于探讨大学生的社会支持、控制感在压力源——压力反应中的作用。
The sixth chapter of the thesis proposes the Z-source ac-ac converter topology, introduces its operating principle, control method, device stress, design method, etc.
本文第六章提出了Z源交流一交流变流器电路拓扑，介绍了其工作原理、控制方法、器件应力，设计方法等。
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