For acoustic reasons, the rails are supported on a floating slab, padded with foam rubber, which receives the steel parts.
出于声学考量，轨道通过填充有泡沫橡胶的浮置板支撑，包裹钢部件。
For acoustic reasons, the rails are supported on a floating slab, padded with foam rubber, which receives the steel parts.
出于声学考量，轨道通过填充有泡沫橡胶的浮置板支撑，包裹钢部件。
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