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single-carbon
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  单碳
     Abstract: The impurities in fatty alcohols are single-carbon alkanes and alkenes through the analysis and identification of C14-16 alcohols by GC-MC.
     本文通过色质谱对C14-16醇的分析鉴定,弄清脂肪醇中的杂质是单碳烷烃和烯烃。
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  “single-carbon”译为未确定词的双语例句
     Because of the penetration of chloride and sulphate and the carbonization of concrete, the crystal such as gypsum, hydrated calcium chlorine aluminate, calcium carbonate and single-carbon calcium aluminate were formed and grown up.
     该文通过有限元方法计算了由于温度而产生的结构应力分布,计算结果表明当混凝土表面温度超过110℃时,如不考虑徐变时表层混凝土受到的温度应力将超过4MPa,这使得表层混凝土很容易因温度应力而破坏;
短句来源
     The metabolism-based approach, through observations of the utilization patterns of 95 single-carbon sources performed on the BIOLOG microplates, can provide a lot of information about the microbial functional groups in the soils.
     BIOLOG微量板分析系统是生理学方法的代表 ,它主要是根据土样细胞悬液对 95种单一碳源的利用模式来说明群落结构的变化 ;
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  相似匹配句对
     Single thinking
     思维单一是缺陷
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     from single to unity;
     从单一到统一;
     single-molecule imaging
     单分子显像
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     Single-electron device
     单电子器件
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     -carbon.
     ω为ω碳原子上的取代基数.
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  single-carbon
The quantitative ethoxylate adduct distribution in single-carbon-number and mixed-carbon-number primary alcohol-based samples can be obtained.
      
The study of CSF metabolites in children with serial errors affecting the single-carbon transfer pathway has suggested that S-adenosylmethionine deficiency is a cause of the demyelination.
      
Inborn errors of the single-carbon transfer pathway are rare disorders of folate and cobalamin metabolism.
      
When grown on 6 to14?g/L single-carbon-source tetradecanoic acid, P.
      
The system was combined with an ultra-small-volume electrolytic cell with a single-carbon-fiber (7-μm diameter and 3-mm length) working electrode and used as a new detector for micro high-performance liquid chromatography.
      
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During the period 1956-1958, pathogenicity of the cotton wilt organism, Fusarium oxysporum f. vasinfectum (Ark.) Snyder et Hansen, was investigated in both pot and field experiments. Nantung cotton wilt organism was used as inoculum for artificial inoculation of soil. 22 cotton varieties were tested for the disease resistance. Results indicate that all the varieties of Chinese cotton (Gossypium arboreum L.) are more resistant than the varieties of Upland cotton (G. hirsutum L.) and Sea-Island cotton (G. barbadense...

During the period 1956-1958, pathogenicity of the cotton wilt organism, Fusarium oxysporum f. vasinfectum (Ark.) Snyder et Hansen, was investigated in both pot and field experiments. Nantung cotton wilt organism was used as inoculum for artificial inoculation of soil. 22 cotton varieties were tested for the disease resistance. Results indicate that all the varieties of Chinese cotton (Gossypium arboreum L.) are more resistant than the varieties of Upland cotton (G. hirsutum L.) and Sea-Island cotton (G. barbadense L.). Nevertheless, the Szechuan "52-128" variety of Upland cotton proves to be rather resistant. The variety selected from the hybridization between Chinese and Indian cotton also shows relatively high degree of disease resistance. The host ranges of Nantung cotton wilt fungus were also tested in 1956 and 1957, and none of the 27 kinds of plants tested is infected with the disease. To compare the pathogenicity of the cotton wilt organisms from different localities of China, specimens were collected from Kiangsu, Shensi, Szechuan, Liaoning and Anhwei Provinces. The virulence of the organisms from these five provinces were tested on 22 cotton varieties in 1957 and 1958 in pot experiments. Results indicate that the isolates from Szechuan, Shensi and Liaoning Provinces are more virulent than those from Kiangsu and Anhwei Provinces; while Anhwei isolates appear to be even weaker than Kiangsu isolates. In general, the varieties of Chinese cotton are more resistant to different collections of this wilt organism from all these five localities than the varieties of Upland and Sea-Island cotton. The following sugars or sugar alcohols were tested as single carbon source for each of the above stated isolates; glucose, fructose, galactose, mannose, lactose, sucrose, inulin, soluble starch and arabitol. The representative isolate from Szechuan grows only moderately on galactose, while isolates from other four provinces grow luxuriantly on all kinds of sugars and sugar alcohols used. The production of pigment, the formation of macroconidium, microconidium and chlamydospore of the organism differ as the carbon source varies.

南通棉花枯萎病菌对22个棉花品种致病性的田間和盆栽試驗说明:中棉品种如辽阳一号、鶯湖棉、长丰黑籽、常紫一号、南通白花鸡脚桠鈴果、云南布沼土棉等抗病性比較強,以中棉为母本的中印杂交棉的抗病性也較強;陆地棉和海島棉一般感病程度都較高,但四川选育的陆地棉品种52—128則具有一定的抗病性。将枯萎病菌接种到甘藷等27种作物上,均未感病。五个地区的棉花枯萎病菌致病性的盆栽試驗说明:四川、陝西、辽宁的病原菌致病力較強,江苏的其次,安徽的最弱。以葡萄糖、果糖、半乳糖、甘露糖、乳糖、蔗糖、菊糖、溶解淀粉、阿拉伯糖醇等九种糖和糖醇为碳素营养料时,除四川的病原菌在以半乳糖为碳素营养料时生长中等外,其他都生长旺盛。不同地区病原菌的色素形成、小型孢子、大型孢子和厚膜孢子的产生,随碳素营养料的不同而有所差異。

The method of activation energy asymptotics is used to treat the combustion of a single carbon particle in quiescent gas mixture with high temperature. Both heterogeneous reactions 2C + O2-2CO, C + CO2-2CO and homogeneous reaction 2CO+O2;+2CO2 are considered. It is shown that the burning of the particle is principally carried out during a diffusion-limited period. Four brief and complex periods through which the history of the particle evolves from a heat-up period to the diffusion-limited period are described....

The method of activation energy asymptotics is used to treat the combustion of a single carbon particle in quiescent gas mixture with high temperature. Both heterogeneous reactions 2C + O2-2CO, C + CO2-2CO and homogeneous reaction 2CO+O2;+2CO2 are considered. It is shown that the burning of the particle is principally carried out during a diffusion-limited period. Four brief and complex periods through which the history of the particle evolves from a heat-up period to the diffusion-limited period are described. A comparison between results of activation energy asymptotics and exact numerical solutions is given. The agreement is considered satisfactory.

本文把活化能近似逼近方法应用于单个碳粒在静止高温气体中的燃烧问题。对非均相反应2C+O_2→2CO和C+CO_2→2CO及处于平衡态下的气相反应2CO+O2(?)2CO_2都加以了考虑。研究发现碳粒的燃烧过程主要在扩散极限阶段完成,但在加热阶段与扩散极限阶段之间有四个短暂但相当复杂的阶段。本文还举例对活化能近似逼近解法与精确的数值解法进行了比较,比较结果令人满意。

In order to overcome the difficulty in measuring cross-section area and axial Young's modulus of a single carbon fiber, we develop a new method, Static Electric Resonance (SER), and corresponding instruments which can precisely measure the two parameters of a single carbon fiber with any cross-section form by making use of the technique of con-tactless resonance. The paper includes a consideration of some factors that may cause error in measuring, in the hope of raising measurement precision further. The experimental...

In order to overcome the difficulty in measuring cross-section area and axial Young's modulus of a single carbon fiber, we develop a new method, Static Electric Resonance (SER), and corresponding instruments which can precisely measure the two parameters of a single carbon fiber with any cross-section form by making use of the technique of con-tactless resonance. The paper includes a consideration of some factors that may cause error in measuring, in the hope of raising measurement precision further. The experimental results show that air damping has a greater effect on the vibration of fiber. But in vacuum (about 10~(-2) Torr) its effect can be reduced to a minimum that the resonance peak becomes very sharp and the resonance frequencies get much high. On the other hand, because fiber vibrational energy loss is concerned with the position of exci-ting electrode, the transverse resonance frequency would vary with the latter. So it is neces-sary to find out the suitable position. Owing to the nonlinear effect of the exciting elec-tric field, nonlinear vibration takes place when fiber is vibrating transversely or longitudin-ally. For this reason it is difficult to judge of right resonance state of fiber. Such an effect can be decreased through adjusting constant bias voltage and exciting voltage to be low enough.

本文用静电激发产生共振和非接触式接收信号的方法测定碳纤维单丝的横截面积和轴向杨氏模量。研究了空气阻尼、激发电极位置、非线性振动等因素对测试精度的影响,提出了降低测量误差的若干措施,为提高测试精度提供了依据。

 
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