再生铝行业，淘汰直接燃煤的反射炉和4吨以下的其他反射炉，禁止采用坩埚炉熔炼再生铝合金。
The recycling aluminum industry shall phase out coal fired reverberatory and other reverberatories under 4 tons and crucible furnaces are prohibited to smelt recycling aluminum alloy.
本文给出了铝合金粘接件和含矿地层声反射系数的数值计算结果。
Numerical computations of acoustic reflection coefficients are given for aluminum alloy adhesive joints and metal layer embedded in rock.
反射炉熔炼铝合金时，熔损与熔池几何尺寸、熔体氧化膜性质、熔炼工艺及操作等因素有关。
The melting loss has relations with size of melting bath, oxidation film property of melting charge, melting process and melting operation, etc, during melting aluminium alloy in reflecting frunace.
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