最高允许值也是为避免环境噪声对人的健康危害而定的一个安全界限。

This level is also a safety limit to avoid health harm of environmental noise.

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选择R6的阻值时要确保在负载电流的最高允许值的条件下，Q2的基极-发射极电压大约低于0.5V。

When choosing a value for R6, ensure that Q2's base-emitter voltage is less than approximately 0.5V at the maximum permissible value of the load current.

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结果：散装再生油、煎炸油及合格食用植物油的理化指标与国家规定食用油标准进行比对，部分散装油及煎炸老油的感观异常，特别是酸价远高于国家家庭食用油最高允许值。

Results: By contrast with national standard, some hogwash fat in bulk and Fried oil are abnormal on sense, and that acid value is higher than the maximum value of nation standard.

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