Contraction principle is an important constitution of large deviation theory.

收缩原理是大偏差理论的重要组成部分。

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According to the analysis of the speed force of muscle contraction in track and field, the author point out the power training theory.

通过对田径运动中肌肉收缩速度力量分析，提出了提高运动员专项速度力量的训练原理。

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Aim of this paper was to observe the effect of propofol on tracheal smooth muscle contraction, and provide the theory bases for safely using propofol in patients with asthma and AHR.

本文旨在探讨丙泊酚对气道平滑肌收缩作用的影响，为丙泊酚能否安全合理的应用于哮喘等气道高反应患者提供理论依据。

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