并且通过实验来验证，以期得到指导辅助低频扬声器箱在房间中摆位的方法。

Results of experiment validated the method, and a method for the better position of subwoofer in normal room is derived.

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迪安斯和罗滕伯格选择了紧凑型Melodie线阵列扬声器来满足精准覆盖角扩声需求，配置为5箱体一列，共4列紧吊装在顶棚。

Deans and Rothenberg selected the tight pattern control of M 'elodie line array loudspeakers to deliver the precise coverage needed, with four hangs of five boxes, flown tight to the ceiling.

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防爆挠线连接管用于防爆电话站、防爆接线箱、防爆扬声器的输入，输出口到布线钢管之间的过渡连接，起到保护电缆的作用。

Explosion-proof flexible connecting pipes is used in explosion-proof telephone station, explosion-proof terminal, explosion-proof loud-speaker inlet or outlet to conduit and protect the cable.

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