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动态脉冲
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  dynamic pulse
     Theoretical Calculation of Gaseous Concetration by the Dynamic Pulse Measurent of Gas sensing Element
     气敏元件动态脉冲测试时气体浓度的理论计算
短句来源
     An investigation on air sensitivity of SnO 2/ZnO and ZnO/SnO 2 bilayer is carried out by dynamic pulse.
     采用动态脉冲法研究了SnO2/ZnO及ZnO/SnO2 双层膜的气敏性质。
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  “动态脉冲”译为未确定词的双语例句
     ELECTRICAL CONDUCTIVITY MEASUREMENT OF HIGH PURE WATER BY DYNAMIC IMPULSE
     高纯水电导率动态脉冲测定方法的研究和应用
短句来源
     The procedure and technique for the determination of hydrogen chemi-sorption on Pt/r-Al2O3 catalyst by the flow type pulse adsorption method were described.
     本文描述了流动态脉冲氢吸附装置用于Pt/γ-Al_2O_3催化剂的方法和技术。
短句来源
     Technology development speed and quality is decided by the extent of diffusing function of heat city in region. in the paper, dynamic impulse response model and method of time series is used to calculate the diffusing ability.
     区域中心城市技术扩散功能发挥程度的大小决定了区域技术发展的质量与速度,通过运用动态脉冲函数模型与时间序列收敛模型分别测算了上海与北京的技术扩散能力,研究表明上海的技术扩散能力远大于北京。
短句来源
     A Large Dynamic Range Gamma Radiation Detector Insensitive to Neutron Radiation
     一种对中子相对不灵敏的大动态脉冲γ辐射探测器
短句来源
     The influence of calcining condition, residual halide anion and adsorptive temperature on the amount of H2 and CO uptake over supported ruthenium catalysts was studied.
     本文应用动态脉冲吸附技术测定了H_2和CO的吸附量,结合透射电镜(TEM)和程序升温还原(TPR)等表征技术考察了活化条件对金属Ru粒子化学环境的影响.
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  相似匹配句对
     DYNAMIC
     动态
短句来源
     DynamicState
     动态
短句来源
     Impulsive Synchronization of Complex Dynamical Networks
     复杂动态网络的脉冲同步
     Kinetic Parameters Research for Pulsed Reactor
     脉冲反应堆动态参数研究
短句来源
     PULSED MHD GENERATOR
     脉冲磁流体发电机
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  dynamic pulse
Chromatographic results have been compared with those obtained by a dynamic pulse adsorption technique in a commercial apparatus.
      
The layer is produced by the method of plasma dynamic pulse modification of the surface and plasma gas-thermal deposition of a powder material containing fine particles.
      
Particular consideration was given to the peculiar and antithetic traits of the Australian social landscapes: the solitude and vastness of the rural world, the dynamic pulse of urban life.
      
Dynamic pulse heating experiments are typically performed on nanosecond to millisecond timescales, providing data that would not otherwise be obtainable.
      
It is found experimentally that a dynamic pulse causes intense plastic strains at the "explosion products-metal" interface, leading to thermal softening of the steel boundary layer.
      
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The procedure and technique for the determination of hydrogen chemi-sorption on Pt/r-Al2O3 catalyst by the flow type pulse adsorption method were described. A glass tube containing catalyst 401 which is used as a color indicator for trace amount of oxygen was connected with the sample tube to monitor the purity of carrier gas during operation. Experimental results showed that the optimum ratio of quantity of catalyst used to the volume of pulse was in the range of 2.4X10-2-5.0 X 10-2g(Pt)/ml(pulse). The hydrogen...

The procedure and technique for the determination of hydrogen chemi-sorption on Pt/r-Al2O3 catalyst by the flow type pulse adsorption method were described. A glass tube containing catalyst 401 which is used as a color indicator for trace amount of oxygen was connected with the sample tube to monitor the purity of carrier gas during operation. Experimental results showed that the optimum ratio of quantity of catalyst used to the volume of pulse was in the range of 2.4X10-2-5.0 X 10-2g(Pt)/ml(pulse). The hydrogen chemisorption (expressed as H/Pt) of various Pt/Al2O3 catalysts was measured,and the calculated mean size of platinum crystallites was in agreement with that directly electron microscopy-viewed. The stoi-chiometry of various Pt/Al2O3 expressed by ratio of hydrogen chemisorption: oxygen chemisorption:hydrogen tit ration (HC:OC:HT) is 1:1:3, which is reproducible and is invariant for catalysts with different mean size of platinum crystallite.

本文描述了流动态脉冲氢吸附装置用于Pt/γ-Al_2O_3催化剂的方法和技术。为了检测载气的纯度,在样品管进口直接连接装有变色的401型脱氧催化剂的检测管。通过条件试验,找到催化剂用量与脉冲体积的合适配比范围为4.8—10.0(克样/毫升脉冲)。测量了各种Pt/γ-Al_2O_3的氢吸附(以H/Pt表示),计算得到的铂晶粒平均大小和电镜结果基本相符。由于净表面测出的各种Pt/γ-Al_2O_3的化学计量数比用氢吸附:氧吸附:氢滴定的比值表示,即HC:OC:HT为1:1:3,重复性较好,并且不随铂晶粒大小改变而改变。

The influence of calcining condition, residual halide anion and adsorptive temperature on the amount of H2 and CO uptake over supported ruthenium catalysts was studied. It was found that H2 and CO uptake decreased gradually with enhancing of calcining temperature in air and dropped unexpectedly to zero beyound 523 K. The possibilities of sudden enlargement of the Ru crystallite siza with the calcining temperature and the site blocking by residual Cl- as the catalysts were prepared from RuCl3 precursor were ruled...

The influence of calcining condition, residual halide anion and adsorptive temperature on the amount of H2 and CO uptake over supported ruthenium catalysts was studied. It was found that H2 and CO uptake decreased gradually with enhancing of calcining temperature in air and dropped unexpectedly to zero beyound 523 K. The possibilities of sudden enlargement of the Ru crystallite siza with the calcining temperature and the site blocking by residual Cl- as the catalysts were prepared from RuCl3 precursor were ruled out. This phenomenon would be ascribed to the interaction between Ru metal and support. The interaction between RuO2 and support was strong, while that between nonoxide Ru compound and support was poor, before reduction. Due to the existence of halide anion in support, the transformation of Ru nonoxide precursor to RuO2 in the process of calcination in air. espccialy in a flow of He, could be prevented. The H2 and CO uptake was found to be multiplied as compared with that of the halide-free catalysts on account of the presence of halide anions in the catalysts. The amount of CO adsorbed was found to increase with the temperature of adsorption implying that the activation of some adsorption sites was required.

本文应用动态脉冲吸附技术测定了H_2和CO的吸附量,结合透射电镜(TEM)和程序升温还原(TPR)等表征技术考察了活化条件对金属Ru粒子化学环境的影响.发现活化条件对Ru催化剂H_2和CO吸附量的影响很显著,H_2和CO低温吸附量随焙烧温度的升高而锐减;改由在惰性气体中焙烧或载体经HCI或HF预处理,大大增加了低温吸附量.TEM测定结果表明:金属Ru平均粒径(?)值随焙烧温度(在623K以下的范围内)的升高而减小,说明在此活化条件下处理的催化剂,其低温H_2和CO化学吸附量不能反映金属的分散度.TPR结果说明在空气中焙烧催化剂,Ru非氧化物前身转变成为RuO_2,并且导致金属与载体之间产生较强的相互作用,改变金属Ru粒子的化学环境,吸附活化能垒增高,在低温下H_2和CO的吸附量很小.

On the basis of investigating foreign information and according to the characteristics in high engery gas fracturing process on different formation conditions where high velocity, high temperature and high pressure pulses react instaneously and dynamically, a testing system on downho1e pressure vs time process was developed. The system provids a powerful mean for the research of high energy gas fracturing aplication for the further improving of oil/gas reservoir development.

在对国外文献深入调研的基础上,针对不同地层条件下高能气体压裂过程中,井下高速、高温、高压的瞬时动态脉冲作用特点,开发了井下压力—时间过程的测试系统,为进一步改善油气藏开发中应用高能气体压裂提供一种有力的研究手段。

 
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