... （电话）用户姓名 address name （电话设备上的）声罩 acoustic hood （电缆）气密接头 air-tight joint ...
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同时，舞台的顶部有能够活动的声罩，由高科技材料制作。
Meanwhile, at the top of the stage is a movable soundproof cover made by high-tech material.
所述直线可以经过所述多个第一和多个第二声学驱动器的声学驱动器防尘罩的中心。
The straight line may pass through the centers of the dust covers of the acoustic drivers of the first and second plurality of acoustic drivers.
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