每个单元由标准的定向结构刨花板做成，隔热隔音，外面是结实的钢质框架。

Each unit is built using standard OSB plates with thermal and acoustic insulation bound by a rigid steel frame.

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首先，每个耳机都采用了双重结构提供了额外的隔音层。

First, each earpiece employs a dual housing structure for an extra sound insulation layer.

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从建筑经济学观点和隔热隔音的角度来看，选择混凝土用于建筑的主要结构框架似乎是合理的。

It seemed logical, from the point of view of sound construction economics and thermal and acoustic insulation, to choose concrete for the building's main structural framework.

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