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| Hydro metal (typeE ： 0.3C, 3.5Cr, 9 〜10W; typeZ：0.26C, 3Cr, 9 〜 10W,0.5Mo,2.5Ni) | |||
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海德 罗 合金 : 5 phrases in 2 subjects |
| Metallurgy | 3 |
| Technology | 2 |
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