产品同质、无差别 Product homogeneity
商品实质性差别 PHYSICALLY AND MATRIALLY DEFEERENT
但是产品质量有差别的 But product quality differences of
通过感官评价和（TPA）质地剖面分析分析来比较酵头发酵馒头和工厂化生产馒头的品质差别。
The qualities of Jiaotou fermented CSB and that of commercially produced ones were compared by sensory analysis and texture profile analysis(TPA).
项目管理涉及的手段、才能和品质与产品管理所涉及的差别很大。
The skills, talents, and traits involved in project management are very different from those involved in product management.
酒精浓度增长2%听起来差别不大，但是，它对葡萄酒品质和效力的影响相当大。
A 2 percent increase in alcohol may sound like a tiny difference, but the effect on a wine's character and potency is considerable.
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