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1·Generally, there are large amounts of heterotrophic bacteria and small amounts of autotrophic bacteria in the water body.

总体来说，水体中异养微生物数量大，而自养微生物数量小。

2·Heterotrophic bacteria eat most of the carbon-based materials in raw sewage while autotrophic bacteria consume ammonia and nitrogen compounds.

异养细菌可以吃掉未处理污水当中的大部分碳基物质；而自养细菌则会消耗掉氨氮化合物。

3·Official Name: Bioconversion of Carbon Dioxide to Biofuels by Facultatively Autotrophic Hydrogen bacteria.

项目名称：利用兼性自养氢细菌将二氧化碳转化为生物燃料。

4·It is characterized of autotrophic ANAMMOX bacteria transferring NH4 + -n to N2 in anaerobic condition.

它是指在厌氧条件下由自养型anammox细菌将NH 4 + - N直接转化为n2。