spring back radial seal的意思|示意
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弹簧支撑径向密封
spring back radial seal的网络常见释义
弹簧支撑径向密封 ... 弹簧支撑迷宫汽封 spring back labyrinth gland 弹簧支撑径向密封 spring back radial seal 弹性平衡，弹簧秤 spring balance ...