Sound level meters, Vibration meters, Frequency analyzes.
声级计, 振动米, 频率分析仪.
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Sound - absorbing provision for lowering the sound level are worthwhile in room where loud noise develops.
在噪音大的房间,采取吸音措施以降低声级是很有必要的.
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The effect of slag splashing is some concerned with the sound level of the nitrogen flow.
转炉溅渣效果与吹氮音平值有一定的关系.
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