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第六章 主昇弹簧式安全阀之设计与计算 流通部分尺寸的关系 高昇度阀示意图如图21 阀座窄截面直径dc是一切阀通道截面尺寸的决定性尺
Chapter VI of the main spring-loaded safety valve design and calculation of the flow part of the relationship between the size of the high-lift valve diagram shown in Figure 21, the diameter of the valve seat narrow cross-sectional diameter of all valve channel decisive ruler