carbon nitrogen ratio 中文意思是什麼

carbon nitrogen ratio 解釋
碳 氮比
  • carbon : n. 1. 【化學】碳。2. 【電學】碳精棒[片、粉]；碳精電極。3. （一張）復寫紙。4. 復寫的副本。
  • nitrogen : n 【化學】氮，氮氣。 nitrogen chloride 三氯化氮。 nitrogen cycle 氮循環。 nitrogen dioxide 二氧化...
  • ratio : n. （pl. ratios）1. 比，比率，比值；比例；系數。2. 【經濟學】復本位制中金銀的法定比價。vt. 1. 用比例方式表達；求出…的比值；使…成比例。2. 將（相片）按比例放大或縮小。
  1. The understanding of biogeochemical cycle of hydrogen, oxygen, carbon, nitrogen, and sulfur elements in nature ecosystem have increased substantially in the past two decades owing to the improvement of gas isotope ratio mass spectrometer and the wide application of isotopic studies with these elements

    摘要近20年由於氣相同位素比值質譜儀的改良和氫、氧、碳、氮和硫等穩定同位素的廣泛研究，穩定同位素的研究技術已實質增加我們對于這些元素在自然生態系中生地化循環的了解。
  2. This paper synthetically summarized current research on terrestrial nitrogen cycle and soil nitrogen cycle, meanwhile, uncertainties of terrestrial nitrogen cycle were discussed. the global diversified ecosystem nitrogen and carbon storage was comparative thoroughly estimated through different life zone. the global organic nitrogen storage was estimate by the c / n ratio

    Post等按照不同生物帶比較全面的估算了全球各種生態系統類型的土壤碳氮密度和含量， mcelroy等利用土壤有機碳儲量和碳氮比來估算了全球土壤有機氮儲量。
  3. Influences of nitrogen ratio and carbon sources on adventitious shoots regeneration of malus zumi leaves in vitro

    氮源比例和不同碳源對珠美海棠離體葉片再生不定芽的影響
  4. The xylanase activity of the mutant kept stable after 10 generations. after orthogonal designing experiment, the optimum fermentation conditions of a. niger j 506 were obtained, which is as followed : concentration of the major carbon resource 4 %, ratio between bran and corncob 5 : 5, concentration of glucose 0. 1 %, concentration of ammonium oxalate as supplemental nitrogen resource 2. 0 %, the initial ph of liquid medium 5. 0, 100ml / 250ml flask

    經過正交試驗設計，得出突變株a . nigerj506產木聚糖酶最佳的工藝條件為：主碳源濃度4 、麩皮與玉米芯的比例為5 ： 5 、輔加碳源葡萄糖的濃度是0 . 1 、輔加氮源草酸銨的濃度是2 . 0 ，培養基初始ph為5 . 0 ， 250ml三角瓶的裝液量為100ml 。
  5. To let more domestic relevant researchers understand the applicable techniques of stable isotopes, this article not only introduces the principles of isotopes measurements by gas isotope ratio mass spectrometer, but also integrates the experiences of hydrogen, oxygen, carbon, nitrogen, and sulfur isotopes in agriculture and environmental applications that were described in papers

    為讓國內更多相關研究人員了解穩定同位素技術的可利用性，本文描述氣相同位素比值質譜儀之分析原理，及整理氫、氧、碳、氮和硫等同位素在農業及相關生態環境研究上應用的文獻。
  6. The ratio of isopropyl alcohol and pure water and temperature in the process of freezing are considerated in the research of the preparation of the pt / c electrocatalysts with freeze - drying method. the result shows, when we use 300ml pure water to wash the carbon ( 40mg ) in isopropyl alcohol ( 20ml ) to alter the ratio of isopropyl alcohol and pure water, we get the electrocatalysts with high catalytic activity ; the use of the liquid nitrogen ( - 196 ) to freeze the suspension ( carbon and precursor solution ) can make the pt / c electrocatalysts in high dispersion

    採用300ml純水對20ml異丙醇中的40mg碳載體進行洗滌抽濾，來改變預凍液中的醇水比例，通過冷凍乾燥制備pt / c的性能較好;採用液氮對預凍液進行冷凍（預凍溫度為- 196 ）制備的pt / c催化劑性能較好;冷凍乾燥法可以有效地避免加熱乾燥過程中前軀體離子在碳載體表面的脫附和團聚，進而制備載量大、分散性好、粒徑較小的pt / c催化劑。
  7. We found a novel " weight effect of catalyst to the carbon nanotube cvd growth, which can dramatically enlarge the net ratio of carbon nanotubes. furthermore, by changing the reactant, new carbon nanotubes doped with nitrogen was fabricated. secondly, based on the successful catalysis synthesis of aluminum borate nanowires, a method to synthesize this excellent enhanced material with large yield was developed

    通過系列實驗發現了碳納米管cvd合成中的「催化劑的重量效應」 ，該效應能夠極大地提高碳納米管的產率（凈產率達到1450 ）和純度（大於90 ） ，並且有希望應用於其它一維納米材料cvd催化合成；改變碳源，大量合成了摻有氮的碳納米管。
  8. The dry atmosphere consists almost entirely of nitrogen ( 78. 1 % volume mixing ratio ) and oxygen ( 20. 9 % volume mixing ratio ), together with a number of trace gases, such as argon ( 0. 93 % volume mixing ratio ), helium, and radiatively active greenhouse gases such as carbon dioxide ( 0. 035 % volume mixing ratio ), and ozone

    干大氣幾乎完全由氮（ 78 . 1 %的體積混合比）和氧（ 20 . 9 %的體積混合比）構成，還包括一些微量氣體，如氬（ 0 . 93 %的體積混合比） 、氦，以及對輻射起作用的溫室氣體如二氧化碳（ 0 . 035 %的體積混合比）和臭氧。
  9. For the decrease of the ratio of si / c, c / n from water to sediment, it is suggested that organic carbon is recycled more rapidly than biogenic silica, while organic nitrogen is recycled faster than organic carbon

    水體和沉積物中si / c 、 c閃比值的差異顯示有機碳的循環比生物硅快，而有機n組分的循環又比有機c快。
  10. Determination of organic matter in forest soil and calculation carbon - nitrogen ratio

    森林土壤有機質的測定及碳氮比的計算
  11. Thus it can be seen that soil microbial biomass carbon, microbial biomass nitrogen, soil microbial biomass c : n ratio and microbial metabolism quotient are very sensitive to heavy metals pollution in red soils

    可認為，微生物生物量碳、基礎呼吸、微生物代謝商、脫氫酶活性及土壤微生物生物量c n比是敏感反映cd 、 pb污染狀況的生物學指標。
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