The extensive pin-boards play a key role in the widespread acoustic treatment, applied to walls, floors and ceilings, which is essential in blended learning spaces.
大量插件板用于墙壁、地板和天花板，在广泛的声学处理中发挥关键作用，这是混合学习空间里必不可少的。
The performance of blended thick and thin polyester filament (BTTPF) before and after alkali treatment and the effect of the additive on it were discussed emphatically.
讨论了共混纺丝法制备的涤纶粗细节丝(BTTPF)的独特性能和添加剂对它的影响，并对碱处理后的BTTPF性能进行了探索。
Surface of blended fiber had porous structure after acid treatment.
经酸处理后共混纤维表面存在多孔结构。
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