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| Standard Code | Standard Title | Standard Class | Order |
|---|---|---|---|
| GB 12971.4-1991 |
Trolley and contact wires for electric traction--Part 4:Aluminium-steel and aluminium alloy composite trolley and content wires 电力牵引用接触线 第四部分:钢、铝及铝合金复合接触线 |
China National Standards 4:Aluminium |
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