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。
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This paper introduces a kind of mobile key - boards which are prevalent, at the same time, has a simple analysis for the speed and right rate of mobile keyboards text input.