reducing union

trade union ... reducer union 变径接头, 过渡接头 reducing union 异径接头, 异径活管接 sealing union for cable 电缆密封接头 ...

工业用的转接头(reducing union) … Mechanical components furnishing power to the fan, … 这是要干什麽？为何锌片在盐酸中 …

问与答-中间卡套式管接头|Union... ... Union 联合卡套接头 Reducing Union 变径联合卡套接头 Bulkhead Union 穿板联合卡套接 …