The mature process of nitrate bacteria in a new mariune aquarium system has been studied.
研究了新建海水水族箱系统中硝化细菌的成熟过程。
Low oxygen levels encourage the growth of bacteria that destroy nitrate - a vital nutrient for the ocean's microscopic plants, or phytoplankton.
低含氧量导致细菌滋长，这些细菌会破坏硝酸盐——海洋微生物及浮游植物的重要营养物质之一。
Aerobic bacteria chew up the ammonia and turn it first into nitride and then to nitrate.
好氧菌将氨先转化成氮氧化物再转化成硝酸盐。
Then anaerobic bacteria take that nitrate and turn it into harmless nitrogen gas.
最后厌氧菌将硝酸盐转化成无害的气体氮。
This paper reports the effect of DCD in seedling stage to soil microorganism of bacteria, mold and actinomycetes, and the concentration changes of both ammonium nitrogen and nitrate nitrogen in soil.
实验研究了双氰胺在玉米苗期对土壤微生物细菌、霉菌和放线菌的影响，及对土壤中铵态氮和硝态氮贮量变化的影响。
Also, this kind of qualitative detecting method for nitrate can be applied in the initial enrichment system of freshwater nitrite-oxidizing bacteria.
该方法亦适用于淡水亚硝酸氧化细菌初始富集培养过程中硝酸盐的定性检测。
Neither ammonium nitrogen nor nitrate nitrogen with high concentration in the medium helped to the growth of bacteria.
培养基中高浓度的氮不论是铵态氮还是硝态氮均不利于菌株的生长；
Benjamin has also observed that cavity-causing bacteria self-destruct in a high-nitrite environment, suggesting an experiment to see if a high-nitrate diet prevents cavities.
此外，班杰明还观察到，造成蛀牙的细菌在高亚硝酸盐的环境下会自我摧毁，意味著高硝酸盐饮食或许能做为预防龋齿的新实验方向。
The hygienic indicators of coliform bacteria, nitrate, nitrite, ammonia have no significant change.
饮用中桶装矿泉水卫生质量变化的指标主要为菌落总数。
The hygienic indicators of coliform bacteria, nitrate, nitrite, ammonia have no significant change.
饮用中桶装矿泉水卫生质量变化的指标主要为菌落总数。
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