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valve spindle sealing
释义
valve spindle sealing
[机械工程 照明 加热] 阀动装置,阀门配气机构,疏水器,阻汽器; 阀杆垫圈; 阀杆封焊; 阀门轴密封; 阀杆封口; 真空管轴锭封闭; 阀轴垫圈; 阀杆焊接; 阀管封闭; 锭封阀门
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更新时间:2025/12/26 13:39:43