Examine the firmness and color of fresh pears. Being firm to touch is one of the many indicators of freshness.
查看梨的硬度和颜色。摸起来硬说明它可能是新鲜的。
Total volatile basic nitrogen and aerobic bacterial count of the sample were measured simultaneously as the standard indicators of pork freshness.
同时采用挥发性盐基氮和微生物菌落总数检测实验进行对比分析。
Total volatile basic nitrogen and aerobic bacterial count of the sample were measured simultaneously as the standard indicators of pork freshness.
同时采用挥发性盐基氮和微生物菌落总数检测实验进行对比分析。
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