Essentially balanced single seat minimizes a variation in delivery pressure resulting from a varying inlet pressure.

基本平衡单阀座最大限度减小进口压力变化对输出压力的影响。

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Theoretical studies of curved girders mainly adopted the methods of balanced method, energy method and variation-based method of virtual work (displacement).

曲线梁的理论研究主要采用平衡法、能量法以及基于变分原理的虚功(位移)方法。

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