该穿孔珍珠岩吸声板包括珍珠岩板，其特征在于，所述珍珠岩板上设有凹陷。
The piercing perlite sound absorbing board comprises a perlite board, which is characterized in that a sag is arranged on the perlite board.
该穿孔珍珠岩吸声板包括珍珠岩板，其特征在于，所述珍珠岩板上设有凹陷。
The piercing perlite sound absorbing board comprises a perlite board, which is characterized in that a sag is arranged on the perlite board.
应用推荐