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plasma smelting
 plasma smelting
met. 等离子熔炼; 等离子熔炼
| reduction process
 reduction process
met. 还原法; 还原过程

to phrases
plasma smelting
met. 等离子熔炼; 等离子熔炼
plasma smelting: 4 phrases in 1 subject
Metallurgy4