There is a kind of rough wall surface, which is said to be sound-absorbing.
有一种墙面是麻的，据说可以吸音。
The structure has a wall surface directed towards the viewer (4).
该结构具有指向观察者(4)的壁表面。
Function on high temperature furnace wall surface in radiation heat transfer.
高温炉壁在辐射传热中的作用。
Preconditioning: an unpainted surface: loose parts of the wall surface and dust removal.
预处理：未上漆表面：把墙体表面松散部位及灰尘去除。
Preconditioning: an unpainted surface: loose parts of the wall surface and dust removal.
预处理：未上漆表面：把墙体表面松散部位及灰尘去除。
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