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open hearth steelmaking
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open hearth steelmaking
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炼钢
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open hearth steelmaking
平炉炼钢
以煤气或重油作为燃料形成高温火焰,在反射炉炉膛内加热生铁和废钢等原料,使之熔化后精炼成钢液的炼钢工艺。
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penultimate effect
penultimate remainder
penumbra
penumbral eclipse
penumbral filament
penumbral lunar eclipse
penumbral magnitude of eclipse
penumbral region
penumbral wave
Penza
Penza oblast
Penzhou Shandi
Penzias, Arno
Península de Azuero
Península de Yucatán
peony family
peony grey mildew
peony leaf spot
peony pattern silk vest
Peony Pavilion
peony root
peony root-knot nematode disease
peony seed oil
Peony Zhao Zhiqian
Peonía
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