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.
选择的多孔材料有普通纸面石膏板、膨胀珍珠岩、膨胀蛭石和膨润土。
There are plaster board, expanded perlite, expanded vermiculite and montmorillonite as supporting materials.
夹心板主要由钢丝及轻烧氧化镁、粉煤灰或者膨胀珍珠岩，再加水泥、粘结剂、发泡剂混合搅拌发泡成一整体。
The sandwich boards are mainly mixed, foamed, and integrated with steel wires, light burning magnesium oxide, fly ash or expanded pearlite, cement, adhesives, and foaming agents.
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