很少量的这种菌群是很难清除的。 此外，它们与低流量水流一起作用，可能促进细菌增长。
And that, combined with the low water flow, is probably promoting the growth.
根面细菌在营养需求分类上可归为氨基酸需求菌群。
The nutritional demand of bacteria in root plane was of amino acid type.
光合细菌作为一类古老的细菌类群，已经在众多领域得到应用。
Photosynthetic bacteria is a kind of ancient microorganism and has been applied in many areas.
光合细菌作为一类古老的细菌类群，已经在众多领域得到应用。
Photosynthetic bacteria is a kind of ancient microorganism and has been applied in many areas.
应用推荐