spontaneous fermentation

• 自然发酵

spontaneous fermentation的用法和样例：

例句

1. The nitrite contents in pickles produced by inoculated fermentation or natural fermentation were compared.
   对人工发酵和自然发酵泡菜中亚硝酸盐含量进行了对比分析。
2. Upon these conditions, the flavor components of natural fermentation and inoculating fermentation sauerkraut were analysed comparatively.
   在此条件下对自然发酵和接种发酵的风味成分进行了分析比较。