membraned inclusions 膜内含物
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The furnace, U-beam separator, and superheater enclosures are constructed entirely of top-supported, gas-tight, all-welded membraned tube walls which do not require hot expansion joints.
炉膛、U型钢分离器，以及过热器的外壳由顶部支撑、气密、全焊接的膜式管墙构成，因此不需要膨胀节。
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