| 摘要 |
The installation comprises diffraction plate (2) standing at equal spaces on the bottom plate (1); diffractive sound absorbing plates (2a) (2b)(2c) having inner glass wool (6); front plate (6") with sound absorbing hole (6') in front of (2a)(2b)(2c), inclined plates (4)(4a) (4b) with water discharging hole (5)(5')(5") between (2) and (2a), (2a) and (2b), (2b) and (2c) respeatively; frame fixing member (3) under the bottom plate (1).
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