用内源排泄物中氮的能值代替尿的能值进行代谢能的校正更为合理。
It was more reasonable to substitute the energy of uric acid with that of endogenous nitrogen losses.
表明内源排泄物中代谢粪氮的能值与尿的能值不同，粪中氮的能值高于尿中氮的能值。
It indicated that energy of endogenous nitrogen was different to that of uric acid, the energy of endogenous nitrogen was higher.
当不投加外部碳源时（内碳源），通过内源呼吸代谢作用进行反硝化效果最差，脱氮率仅有18.8%。
There was low nitrogen removal rate (18.8%) by endogenous respiration without carbon sources added.
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