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1·The peak reproduction of sheathed bacteria was in the summer.

夏季为鞘细菌繁殖高峰期。

2·Study on preservation methods of sheathed bacteria showed that distilled-water preservation method was an effective and simple one.

对鞘细菌几种保藏方法进行比较研究，结果表明蒸馏水保藏法保藏时间长，是一种经济简便有效的保藏方法。