求翻译：时墙壁反光，墙壁一律用暗光的夹板镶成：地板和天花板用本地出产的黄杨木和桦木制成；弹簧椅蒙上红色光滑的皮套。采用这样的装置，演出时可以有圆润的音响效果是什么意思？

Reflective walls when, using dark light plywood set into the walls: floors and ceilings with locally made of boxwood and birch spring Chair over red smooth leather. Using such a device, the play can be mellow acoustics

正在翻译，请等待...

When the wall reflection, the wall all uses the obscure ray the clamping plank to inlay: The floor and the ceiling with the boxwood and the white birch which local produces make; In spring chair Mongolia red smooth leather sheath.Uses such installment, when the performance may have the clear acousti

Reflective walls when, using dark light plywood set into the walls: floors and ceilings with locally made of boxwood and birch spring Chair over red smooth leather. Using such a device, the play can be mellow acoustics

Reflective walls when, using dark light plywood set into the walls: floors and ceilings with locally made of boxwood and birch spring Chair over red smooth leather. Using such a device, the play can be mellow acoustics