最简单的发酵过程可以只是把微生物与营养培养基混合，使其中的组分发生反应。
In its simplest form fermentation processes can be just the mixing of microorganisms with a nutrient broth and allowing the components to react.
从最低培养基中的简单物质制造硫胺素，不是通过单一的化学反应。
The manufacture of thiamine from the simple substances present in the minimal medium does not take place in a single chemical reaction.
据此认为，提高培养基中铜元素浓度是一种增强水稻愈伤组织植株再生的简单和有效的方法。
Results of the present experiments indicate that raising copper concentration of the medium is a simple and effective method for the enhancement of plant regeneration in rice callus culture.
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