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| 制铅工厂 | |||
| 铅制品; 铅衬; 制铅工厂; 铅矿熔炼工厂 | |||
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| 衬铅; 铅工程; 花彩玻璃窗上的铅棂工程 | |||
| 填空花式组织 | |||
| lead works: 5 phrases in 3 subjects |
| Metallurgy | 1 |
| Technology | 3 |
| Welding | 1 |
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