碳氮比 的英文怎麼說

中文拼音 [tàndànbǐ]
碳氮比 英文
carbon nitrogen ratio
  • 碳 : 名詞[化學] （非金屬元素） carbon （c）
  • 氮 : 名詞[化學] nitrogen （7號元素, 符號n）
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  1. The order of four soil biochemical intensity being sensitive to heavy metal pollution indicated as : nitrification > nitrogen fixation > decomposition of cellulose > ammonification. however, soil microbial biomass c : n ratio increased with the increasing of heavy metals level

    幾種生化作用強度的下降順序為硝化作用固氮作用纖維素分解強度氨化作用；但土壤微生物生物量碳氮比則隨著重金屬污染水平的升高而增加。
  2. 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。
  3. The cno cycle is faster and more energy is produced per second. in order to effectively transport the heat energy out from the star, its core has to be convective

    碳氮氧循環的反應比較快，可以產生更多能量而只有對流核心能將這些多的能量有效地傳遞出去。
  4. Based on the analyses on mechanical properties, microstructure and fracture of - the microalloyed steels socrv with various heat treatment technique, it can be affirmed that various fractures arttribute to various mechanism, we can draw conclusion that the strength and toughness of microalloyed steels 50crv will be increase simultaneously by optimal heat treatment technique. to illustrate the mechanism of the strength and toughness of microalloyed steels socrv, we designed the comparative experiment and observed the microstructure of the sample which occurred at different quench and tempering temperature and different tempering time. the last experiment results were determined by the four factors : fined microalloyed elements grains, the decompound of martensite, martensite transformation of remnant austenite and the second phase precipitation

    為解釋微合金化50crv鋼強韌化機理，本文通過對不同淬火溫度，回火溫度，回火時間下的力學性能指標的對比及顯微分析，認為微合金元素的細化晶粒，馬氏體的回火分解，殘余奧氏體的轉變，第二相的沉澱析出共同決定了微合金鋼的強韌化情況，特別是由於微合金元素的存在，其細化晶粒及其碳氮化物的沉澱析出，導致鋼的良好的強韌性，並且如果工藝滿足第二相的沉澱析出強化大於回火馬氏體分解引起的軟化效應，會在硬度曲線中產生明顯的二次硬化現象。
  5. 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。
  6. The biological characteristics of mycelia from phellinus igniarius and culture media were studied. two kinds of culture media were suitable for the growth of mycelia. the result indicated that the culture medium with potato as nitrogen source and saccharose as carbon source was suitable for collecting mycelia, and the culture medium with peptone as nitrogen source and solvable amylum as carbon source was suitable for conservation

    為了最大限度地保存菌種的活力，以提高菌絲體的質量及菌絲體內活性成分的累積，本文通過對比研究，進一步對其生長基質進行篩選，明確了兩種適于桑黃菌絲生長的固體培養基：以馬鈴薯為氮源、蔗糖為碳源的培養基較適用於菌絲收集，以蛋白腖為氮源、可溶性澱粉為碳源的培養基較適用於菌種的保藏。
  7. It is the optimal time for subjecting creatine to the medium when cultured to 12h and the concentration of creatine was 0. 75 %. creatine, sarcosine and choline chloride could induce the creatinase production and creatine was the optimal inducer, but creatinine and urea could not induce the creatinase production. 3 purification of creatinase the process of creatinase purification was performed as follows : first the enzyme was completely precipitated in the range of 40 - 80 % of saturation with ammonia sulfate fraction precipitation

    最佳氮源為玉米漿和蛋白腖，最佳比例為2 ： 3 ，最佳濃度為1 . 6 ；加入其它碳源時有助於菌株穩定產酶； 100ml搖瓶的最佳裝液量為15ml ；肌酸、肌氨酸和氯化膽堿都能誘導菌株產酶，其中肌酸誘導產酶的效果最好，而肌酐和尿素不能誘導菌株產酶；誘導物肌酸的最適加入時間為接種培養12小時后，最適加入量為0 . 75 。
  8. 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
  9. Abstract : based on the principle of non - weighting determination of c 、 h 、 n atomic ratio ， a micro - injection sample introducing method was developed for determination of h / c ratio for volatile reagent

    文摘:根據不稱重法測定化合物碳、氫、氮原子比的理論，建立了微量注射法測定強揮發性液體樣品的氫/碳原子比的方法。
  10. The growth of f - 16 and the production of enzyme were affected by microbial medium, including c source, n source, mineral, initial ph of medium, rotating rate, culture time and culture temperature. the results showed that the optimal n sources were peptone, corn steep liquor and yeast extract ; the optimal c sources were sucrose, glucose and maltose ; the optimal minerals were mgso4 7h2o, khpcu and cuso4 5h2o

    實驗表明，氮源中蛋白腖、玉米漿、酵母粉比較好；碳源中蔗糖、葡萄糖、麥芽糖這三種糖對產酶和生物量提高效果顯著；無機鹽中mgso _ 4 ? 7h _ 2o ， k _ 2hpo _ 4 ， cuso _ 4 ? 5h _ 2o對產酯酶的酶活及其反應后所得水解液的光學純度有較好的作用。
  11. 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。
  12. Compared with zero - fertilizer, only organic fertilizer, or chemical fertilizer applications, compound organic and chemical npk fertilizer applications greatly enhance soil microbial biomass in the whole corn growth period, increase the supply of soil nutrient and benefit soil fertility buildup

    研究結果表明，與無肥、單施有機肥、單施化肥相比，有機肥與n 、 p 、 k肥配合施用能顯著增加玉米各生育時期的土壤微生物量碳、氮，促進土壤微生物量顯著增長，增強了土壤養分容量的供應強度，有利於培肥土壤。
  13. Films of the cnx nanotube were produced by thermal decomposition on fe - coated si substrates, and their low field emission properties have been investigated. a high - emission current density of 1. 28ma / cm2 for an applied field of 2. 54v / u m was achieved, implying cnx nanotubes have better electron field emitter properties than the films of carbon tubes and bcn tubes do under same experiment conditions

    860熱解乙二胺，在沉積有鐵催化劑的矽片上生長出cn _ x納米管薄膜，並進行了低場致電子發射特性測試，外加電場2 . 54v / m時，發射電流達到1 . 28ma / cm ~ 2 ，比相同實驗條件下制備出的碳管、硼碳氮管薄膜的場致電子發射性能優越。
  14. We took atrazine and metsulfuron - methyl as examples to evaluate their dynamics of degradation in soils and the responses of microbial biomass after application of organic matters and fertilizers. the objectives are to find out the relationship among of organic matters / fertilizers added, microbial biomass and herbicides degradation, and for remediation of soils contaminated by herbicides. the main results were summarized as follows : effect of organic matters and fertilizers on microbial biomass in soils contaminated by atrazine / metsulfuron - niethyl herbicides ( l ) the contents of soil microbial biomass c, n and p significantly decreased after application of atrazine at the rate of 22

    與空白對照相比，在淡塗泥田中微生物生物量碳、氮、磷分別平均降低了12 . 37 、 11 . 79和11 . 94 ；在青紫泥田中分別平均降低了10 . 70 、 8 . 43和13 . 66 ；在黃筋泥田中分別平均降低了8 . 55 、 11 . 95 （因其酸度較低，微生物生物量磷的測定方法與前兩種土壤的不同，所以未測定其中的微生物生物量磷的含量） 。
  15. ( 2 ) the losses of organic carbon, nitrogen, phosphorus and potassium were different in different farming systems. this losses of these elements according to respective farming systems was the following order : tradition > grass stripe > contour ditch > fallow > contour dam. compared with traditional fanning practices, others farming systems reduced losses of organic carbon, nitrogen, phosphorus and potassium and losses in contour dam, contour and fallow were much less than grass stripe and contour ditch

    （ 2 ）不同農作措施徑流小區有機碳、氮、磷、鉀流失差異明顯，有機碳、氮、磷、鉀流失總量的順序為：順坡農作水平草帶水平溝休閑等高土埂，同順坡農作相比，其他農作措施均有減少有機碳、氮、磷、鉀流失的作用，以等高土埂、等高農作、休閑處理減少土壤有機碳、氮、磷、鉀流失的效果較好。
  16. This paper mainly studied on the effects of optimal carbon sources 、 nitrogen sources and c / n ratios on mycelia growth

    本文初步探討炭色離褶傘菌絲生長所需要的最適碳源、氮源以及不同碳氮比對菌絲生長的影響。
  17. Studying on the effects of nitrogen sources, carbon sources and other influence factors has optimized the lipase fermentation conditions for the strain. the optimal medium composition for the lipase production is ( % ) : yeast extract 1

    對菌株lz1進行產酶條件優化研究，發現碳源和氮源的種類，碳氮源比值以及細菌發酵的初始ph值對酶產量影響最大。
  18. Standard test methods for determination of mass fraction of carbon, nitrogen, and oxygen in silicon nitride powder

    測定氮化硅粉末中碳氮氧的質量比值的標準試驗方法
  19. Preliminary studies have been shown that diamond - like carbon ( dlc ) had a great potential as a durable, wear and corrosion - resistant coating for biomedical implants. surprisingly, carbon nitride ( cnx ) has not received much attention recently in the biomedical field, despite its performance comparable to or greater than that of dlc in this study, cnx and dlc coatings were prepared using the standard dc magnetron sputtering at room temperature

    本文採用磁控濺射（ magnetronsputtering ）技術嘗試在單晶si樣品表面沉積制備碳氮薄膜，研究了薄膜的結構特徵、性能與制備工藝參數之間的規律，並考察細胞在碳氮薄膜上的吸附特性隨制備工藝參數的變化機理，並與類金剛石膜在凝血時間、細胞吸附特性等方面做了對比。
  20. 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
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