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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