| 词汇 | nitrate |
| 释义 | nitrate noun[ C or U ] uk /ˈnaɪ.treɪt/ us /ˈnaɪ.treɪt/ a chemical that includes nitrogen and oxygen, often used as a fertilizer (= a substance that helps plants grow): 硝酸盐;硝酸盐肥料 potassium/sodium nitrate硝酸钾／钠 Nitrogen is converted into nitrates in the soil which plants can then use.氮转化为土壤中的硝酸盐，可被植物吸收。 Chemicals, chemical compounds & gases acetic acid acrolein acrylamide activated charcoal adenine agglomerate cyanide ethyl alcohol glyphosate H2O HCFC HFC hyaluronic acid hydrochloric acid laughing gas limescale meths oxyacetylene prussic acid tartaric acid nitrate | American Dictionarynitrate noun[ C/U ] us/ˈnɑɪ·treɪt/ a chemical that is used esp. as a fertilizer (= substance that helps plants grow) Examples of nitratenitrate The implications of restricting use of fertilizer nitrogen for the productivity of arable crops, their profitability and potential pollution by nitrate. It is doubtful, given the above chemistry, that any significant amount of nitrate formed in these solutions over the 4 d of testing. There may be ecological arguments that light and nitrate are the signals that initiate the germination process of perceptive (non-dormant) seeds. Wetlands may also act as pollution assimilation agents for nitrate pollution created by up-stream agriculture. Microbial immobilization of ammonium and nitrate in relation to ammonification and nitrification rates in organic and conventional cropping systems. Periodic testing showed no detectable nitrite concentrations, thus the results are reported as nitrate alone. Continents rising above sea level constitute the major renewable source of nutrients (nitrate, phosphate) essential to maintaining life. When necessary, the amplification products were further analysed on 6 % polyacrylamide gel stained with 0.1 % silver nitrate. These studies were possible because the seeds only germinated in the presence of light and nitrate. All the strains isolated from milk samples were found not to be nitrate reducers. Epidermal plate formulae of miracidia were examined after impregnation using 3% silver nitrate. Electrical double layer structure revisited via a surface force apparatus : mica interfaces in lithium nitrate solutions. The mainstays of such treatment are nitrates or calcium channel-blockers taken just before a meal. Nitrate may be an important factor influencing natural selection of some species. Reduced nitrate leaching and enhanced denitifer activity and efficiency in organically fertilized soils. These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors. |
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