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First order effects due to displacement thickness are taken into account and the pressure gradients generated in the outer potential flow are included in the numerical solution of the governing equations.


Association analysis of the distribution patterns of the more common species indicates that only positive first order effects and second order interactions were potentially important in this assemblage.


The equations for the first order effects become canonical when a different definition for the orders of magnitude is adopted.


Both results reveal that disappointment aversion induces first order effects, changing significantly the predictions of the model.


However, this can only be true if the electron energy distribution is fully symmetric and only first order effects are considered.

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 The effect of density, nitrogen and potassium application on ratio of root/shoot in the mature stage in hybrid rape of B. napus was analyzed by the quadratic orthogonal rotational regression combination design and the relevant mathematical model to be established. The results showed that the influence of nitrogen application once to root/shoot reached at highly significant difference. The order of these factors on root/shoot was as nitrogen >potassium > density. The ratio of root/shoot to yield was highly... The effect of density, nitrogen and potassium application on ratio of root/shoot in the mature stage in hybrid rape of B. napus was analyzed by the quadratic orthogonal rotational regression combination design and the relevant mathematical model to be established. The results showed that the influence of nitrogen application once to root/shoot reached at highly significant difference. The order of these factors on root/shoot was as nitrogen >potassium > density. The ratio of root/shoot to yield was highly significant negative correlation.  运用三元二次通用正交旋转组合设计研究密度、施氮量、施钾量对甘蓝型杂交油菜成熟期根冠比的影响，并建立相应的数学模型。结果表明，仅有施氮量的一次效应对根冠比的影响达到极显著水平。三因子对根冠比影响大小的顺序为氮肥＞钾肥＞密度。根冠比与产量间呈极显著负相关。  The evolution, nucleation and characteristics of microcracks in typical tectonics are investigated in the experiment of fracture of marble specimen. The change of state during nucleation of microcracks is observed. The controlling effect of tectonics to evolution of microcracks is analyzed by using the damage mechanics theory. These characteristics can be analogized to kilometer meters as the first effect of earthquake precursors. These studies may be helpful to interpret the foreshock or general foreshock... The evolution, nucleation and characteristics of microcracks in typical tectonics are investigated in the experiment of fracture of marble specimen. The change of state during nucleation of microcracks is observed. The controlling effect of tectonics to evolution of microcracks is analyzed by using the damage mechanics theory. These characteristics can be analogized to kilometer meters as the first effect of earthquake precursors. These studies may be helpful to interpret the foreshock or general foreshock in the moderate or short stage before strong earthquakes. The other physical precursors are second or third effect. The local density of microcracks increasing suddenly may be helpful to interpret the phenomenon that part precursor records appear catastrophic jump. The part out of nucleation where some microcracks heal and the density change reversibly may be helpful to interpret the phenomenon that some precursors records appear reverse change. The area difference of microcracks accumulation and evolution in different part of typical tectonics is studied. This difference may be helpful to interpret the characteristics (including the area) of earthquake preparation of different tectonics, and further to interpret the difference of the precursors between plate edge and intraplate. These differences may be introduced by the scholars with different points of view as to discuss about the existence of precursors before earthquakes. However, when the precursor records are studied, one must notice the geology background in different areas.  通过大理岩破裂实验 ,考察了典型构造中微裂纹的演化、集结的过程和特征 .根据损伤理论 ,分析了构造对微破裂演化的控制作用 .根据微破裂集结临界条件的相似原理 ,认为这些特征可以类推到公里尺度 ,它们有助于解释地震中短期阶段的前震或广义前震分布 ,作为地震前兆的一次效应 .其它物理效应为二次或三次效应 .微破裂集结时局部密度突然加大 ,有助于解释部分前兆记录突跳现象 .非集结部分出现部分微裂纹愈合 ,密度反向变化 ,有助于解释一些前兆记录在短临阶段记录中出现反向的现象 .考察了不同构造的不同部位微破裂萌生和演化的范围差异 ,这些差异有助于解释不同地质构造孕震区域的孕震过程 ,从而可解释板缘和板内地震前兆记录的差异 .这种差异可能被不同观点学者分别引用 ,以论证地震是否有前兆记录的问题 .然而 ,在考察不同地区的前兆记录时 ,必须注意不同地区的地质背景 .  Considering the first effect of fiber coupling and started from the theory of Jones matrix,we deduce the expression of the polarization degree p,which reflects the polarization characteristic of the transmitting light in the sensing coil of the stimulated brillouin scattering fiberoptic gyroscope,by the method of statistics and average. The relationship between polarization degree and rotating angle at the splice,the relationship between polarization degree the angle of the incidence of the polarized light... Considering the first effect of fiber coupling and started from the theory of Jones matrix,we deduce the expression of the polarization degree p,which reflects the polarization characteristic of the transmitting light in the sensing coil of the stimulated brillouin scattering fiberoptic gyroscope,by the method of statistics and average. The relationship between polarization degree and rotating angle at the splice,the relationship between polarization degree the angle of the incidence of the polarized light in the sensing coil and the relationship between polarization degree and the ratio of two fiber lengths are analyzed. The results show that the polarization degree gets the maximum when n is 1 and is 90,which assures the polarization stability of the transmitting light.  考虑了光纤耦合的一次效应，从Ｊｏｎｅｓ矩阵理论出发，利用统计平均的方法推导出在受激布里渊散射光纤陀螺敏感环光纤熔接处进行了θ偏振主轴旋转的光纤敏感环中传输光的偏振度表达式，说明偏振度ｐ与θ及偏振光入射角θｐ的关系以及与光纤段之比ｎ的关系，得出当ｎ＝１，θ＝９０°时传输光在敏感环中具有最大偏振度，使传输光达到稳定的偏振特性。   << 更多相关文摘 
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