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hydrogen h
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     The fracture morphology obtained by three-point bending depends upon the crack-tip stress intensity factor K and the Concentration of Hydrogen H. Fracture morphology changed from IG→QC_(HE)→DR with the increase of stress intensity factor K and decrease of concentration of hydrogen H.It is applicable to study the intination and propagation of Crack on high strength steel, to use Acoustic Emission apparatus under the testing Condition in the research.
     高强钢三点弯曲试样断口的形态受应力强度因子K和氢量H的影响,随着K值增加和氢量减小,断口形态向IG→QC_(HE)→DR过渡。 根据本研究工作的试验条件用声发射(AE)捕捉启裂点和监视裂纹的扩展是可行的。
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     A comparative study indic ated that the modification of the K + salt to the MWCNTs did not improve its storage capacity of hydrogen,but le d to elevating of desorption tempera ture of adsorbed hydrogen H 2 (a)to a cer-tain extent;
     K+盐对MWCNTs的修饰对增加其储氢容量并无促进效应,但相应化学吸附氢物种的脱附温度有所升高;
短句来源
     Using alcohol hydrogen test,three point bending test, microstructure observation and fracture analysis, the effect of Ti content on diffusion hydrogen H d escape characteristic, microstructure and fracture morphology of electrode deposit metal were investigated.
     利用酒精法测氢技术、三点弯曲法试验 ,并结合显微分析和断口分析方法探讨了钛含量对熔敷金属扩散氢逸出特性、焊缝组织以及断口形貌的影响。
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  相似匹配句对
     METALLIC HYDROGEN
     金属氢
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     Hydrogen Energy
     氢能
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  hydrogen h
The yields of formation of radiolytic hydrogen (H2) and orthopositronium (o-Ps) in aqueous and alcoholic acetone solutions were experimentally determined.
      
The approximate functions are compared to the locally exact ones obtained earlier by the correlation function hyperspherical harmonic (CFHH) method for the helium atom, light helium-like ions, and the negative ion of hydrogen H-.
      
The ratios of excitation transfer rates from atoms He(2 3S1) k1(n) and molecules of helium He2(a 2sσ 3Σu+) k2(n) to atomic hydrogen H*(n) are measured to be k1(n=3)/k2(n=3)=0.04±0.02 and k1(n=4)/k2(n=4)=0.01±0.02.
      
Study of the possible charge bistability of a hydrogen H*2 defect
      
The dependence of the energy of a hydrogen H*2 defect on its charge state is simulated using the modified Tersoff potential.
      
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The simplified Coal characteristic Coefficient β' = 2.35, as proposed in author's two previous papers to ho used with Vr for coal classification, has been for the first time repeatedly proved as shown in many graphs (Fig. 2-Fig 9) to represent (a) the foundamental characteristics of coal, like caking property, heating value, plastic layer thickness. etc. (b) the quality of the side Chain of the coal crystal (c) the percentage proportion of vitrain composition with respect to the other constitutents in petrographic...

The simplified Coal characteristic Coefficient β' = 2.35, as proposed in author's two previous papers to ho used with Vr for coal classification, has been for the first time repeatedly proved as shown in many graphs (Fig. 2-Fig 9) to represent (a) the foundamental characteristics of coal, like caking property, heating value, plastic layer thickness. etc. (b) the quality of the side Chain of the coal crystal (c) the percentage proportion of vitrain composition with respect to the other constitutents in petrographic components, during the different stages of coalification. (2) The simplified coal characteristic coefficient β' can be used to substitute the free swelling index, Roga number L.R. and the plastic layer thickness y etc in the coal classification of type together with the volatile matter on combustible basis VP for the coal classification of rank. (graph 10-graph 16) (3) Besides the VP and β' coal classification system,(Fig - 18), Carbon content on combustible basis CP with the free hydrogen H°= (HP=)for coal classification (Fig-23), VP vervus classification (Fig.-24), VP versus H°(Fig. -25) and VP versus (Fig-26) coal classification are also proposed. Comparisons of the different systems are made with the conclusion of adopting VP versus β' as the most logical system. (4) In the VP versus β' graph; the plastic layer thickness y curves (Fig.-27) represent the the rate of vitrinification during the different stages of coalification due to the different constituents of principal peat-forming plant substances. So a new international three-parameter coal classification system is proposed with the volatile matter on combustible basis VP as the first parameter and the simplified coal characteristic coefficient β' as the second principal parameter with the thickness of plastic layer y in mm as the third parameter. (Fig-28)

(1)简化特性系数β’=2.35代表着煤的分子结构中侧链的本质,而纯燃质挥发分 VP代表着煤的原始物质中侧链与核心部分的相对数量. (2)简化特性系β',即自由氢碳比率函数,是煤岩成分比例不同的标志;角质类和不透明质与透明基质数量的相对比例的标志;是镜煤质与非镜煤质含量相对数值比例的标志,亦即是镜煤化程度的标志。 (3)简化特性系β'反映了煤的特性,焦油产率,炼焦性质,胶层厚度,发热量及碳含量,氢含量,氧含量等,并有充分的证明。 (4)简化特性系β’揭露了近百年来国际间对於煤的特性的秘密,而是国际上有最完善的理论根据的分类指标。 (5)因此,作者建议(a)用VP及β’来作为中国煤工艺技术分类指标(6)用VP,β'与y作为国际煤分类指标,其中 厚度y,根据作者的见解,代表着煤在碳化过程中,凝 化的速度的标志。

The pepar studys on susceptivity of hydrogen-induced Cracking and hydrogen embrittlemen of high strength steel used the three-point bending test.The stats of hydrogen-induced embrittlmemt may be Judge by the index ofHydyogen embrittlement I_(COD)=(δCR-δCRH)/δCR. The fracture morphology obtained by three-point bending depends upon the crack-tip stress intensity factor K and the Concentration of Hydrogen H. Fracture morphology changed from IG→QC_(HE)→DR with the increase of stress intensity...

The pepar studys on susceptivity of hydrogen-induced Cracking and hydrogen embrittlemen of high strength steel used the three-point bending test.The stats of hydrogen-induced embrittlmemt may be Judge by the index ofHydyogen embrittlement I_(COD)=(δCR-δCRH)/δCR. The fracture morphology obtained by three-point bending depends upon the crack-tip stress intensity factor K and the Concentration of Hydrogen H. Fracture morphology changed from IG→QC_(HE)→DR with the increase of stress intensity factor K and decrease of concentration of hydrogen H.It is applicable to study the intination and propagation of Crack on high strength steel, to use Acoustic Emission apparatus under the testing Condition in the research.

本工作采用了三点弯曲研究低合金高强钢氢致裂纹及氢致脆化的敏感性,用脆化度J_(ICOD)=(δCR-δCRH)/δCR作为氢致脆化的判据。高强钢三点弯曲试样断口的形态受应力强度因子K和氢量H的影响,随着K值增加和氢量减小,断口形态向IG→QC_(HE)→DR过渡。根据本研究工作的试验条件用声发射(AE)捕捉启裂点和监视裂纹的扩展是可行的。

The pepar Studys on Susceptivity of Hydrogen-Induced Cracking and Hydrogen Embrittlement of High Strength Steel used the three-point Bending test. The Stats of Hydrogen-Induced Embrittlement may be Judge by the Embrittle merit Parameter I_(COD)=(δ_(cr)-δ(crh))/δ_(cr)·The Fracture Morphology Ebtained by Three point Bending Depends upon the Crack-tip Stress Intensity Factor k and the Concen tration of Hydrogen H. Fracture Morphologg Changed from IG→Q_(ch)e→DR with the Incease if stress...

The pepar Studys on Susceptivity of Hydrogen-Induced Cracking and Hydrogen Embrittlement of High Strength Steel used the three-point Bending test. The Stats of Hydrogen-Induced Embrittlement may be Judge by the Embrittle merit Parameter I_(COD)=(δ_(cr)-δ(crh))/δ_(cr)·The Fracture Morphology Ebtained by Three point Bending Depends upon the Crack-tip Stress Intensity Factor k and the Concen tration of Hydrogen H. Fracture Morphologg Changed from IG→Q_(ch)e→DR with the Incease if stress Intensity Factor K and Decrease of Concentration of Hydrogen H. It is Applicable to Study the Intination and Propagation of Crack on high Strength Steel, to use A coustic Emission, Apparatus Under the testing Condition in the Research.

本文采用三点弯曲试验对低合金高强钢氢致裂纹及氢致脆化的敏感性进行了研究,用脆化度I_COD=(δ_cr-δ_crH)/δ_cr作为氢致脆化的判据。高强钢三点弯曲试样的断口形态受应力强度因子K和氢量H的影响,随着K值增加和氢量减少,断口形态由I G→QC_(HE)→DR过渡。根据本研究工作的试验条件,用声发射(AE)捕捉启裂点和监视裂纹的扩展是可行的。

 
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