... combined axial and radial labyrinth gland 轴向-径向组合迷宫式汽封、轴向-径向组合曲径式汽封 control valve gland 操纵阀压盖 cork-packed gland 用软木填充的衬垫 ...
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gland steam control valve 汽封蒸汽调节阀
Control Valve Pack Gland 控制阀组合盖
Gland Seal Control Valve 轴封控制
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