查询词典 gradient

Based on the data of 5 years in 1970s with duct present and those of December 1990, refractivity at height of 1 km, the average gradient of refractivity and surface refractivity are obtained by regression of the refractivity profiles to exponential models. And it is found that the constants in the exponential relation of refractivity of 1 km above ground and the mean vertical refractivity gradient in the first kilometer height with the surface value of refractivity are 110.6, 0.002 9 and -8.6, 0.004 7 respectively according the data of the 1970s?

对上世纪70年代中5年内波导出现的数据和1990年12月份的全部数据的研究表明：贴地波导出现时，它们的值及其和Ns指数关系的常数分别是110.6、0.002 9和-8.6、0.004 7，地面上1 km处的折射率N1k及地面上第一公里内的平均折射率梯度dN1和地面折射率Ns的相关性比没有波导出现的情况好；而这两者相比，前者的结果又比后者好。

First, we have proved that the constraint of local constant gradient angles is equivalent to the minimization of total variation. Based on this, a stronger continuity constraint of gradient angle is presented. The interpolation formula (a 3-degree-PDE) derived from the constraint can ensure the continuity of level lines and reduce the width of edges. The contrast invariant of the regularizer of the formula is also proved.

首先证明了局部恒定的梯度角约束插值等价于总变分最小化；在此基础上，提出一个具有更强连续性的梯度角约束，由这个约束条件导出的三阶偏微分方程使插值的图像既可以保证水平线方向的连续性，又减小图像边缘的宽度；最后证明了插值方程中正则项的对比不变性。

In order to investigate the influence of surface tension gradient driven convection on solidification behavior of alloys under microgravity, remelt and solidification of Al-Al〓Ni eutectic alloys, which have characteristics of directional growth along temperature gradient, were carried out on board Chinese retrievable satellite.

利用我国返回式科学实验卫星搭载的梯度炉和Al-Al〓Ni共晶合金定向生长的特点，研究了与重力无关的表面张力驱动对流（Marangoni对流）对合金凝固行为的影响，在空间微重力下获得了弯曲的双涡放射状共晶组织。

Two kinds of thermal residual stresses exist in metal matrix composites. One of them is temperature gradient induced thermal stresses caused by temperature gradient in MMC. The other can develop upon cooling from the processing temperature to room temperature due to the coefficient of thermal expasion mismatch between the fiber and matrix and is called CTE mismatch induced thermal stresses.

金属基复合材料有两种形式的热应力，一种是在MMC中由于温度梯度引起的热应力，即温度梯度诱导的热应力；另一种是在冷却过程中由于基体金属和纤维的热膨胀系数不匹配引起的热应力，即热膨胀系数不匹配诱导的热应力。

Riemannian Space. The parameter space in blind source separation is Riemannian Space. Natural gradient has many better characters compared with normal gradient.

自适应盲分离算法中的系数空间是黎曼空间，本文将自然梯度下降法应用于Infomax算法可以改进算法的性能，有利于算法的数值稳定性和提高算法的收敛速度。

Sodium iodide symporter is located in the baso lateral plasmamembrane of thyrocytes. The main function of NIS is to cotransport one iodide ion against its electrochemical gradient together with two sodium ions along their electrochemical gradient.

碘是合成甲状腺激素的重要组成部分，碘在甲状腺中的浓度是血浆浓度的 2 0～ 4 0倍，碘的摄取主要在甲状腺滤泡上皮细胞基底膜上进行，是由钠碘转运体驱动的主动转运过程 [1 ] 。

In view of the non-linear relation between the hefts of the partial stress tensor and the velocity gradient of the fluid, the intrinsic equation only depends on the first order differential coefficient of the velocity gradient.

考虑流体的偏应力张量分量与速度梯度为非线性关系的情况，本构方程仅依赖于速度梯度的一阶导数。

The results show that the tangential stress distribution is decided by pressure gradient, that is, the maximum tensile stress locates where maximum pressure gradient is, while the compressive stress locates where pressure gradients change their direction.

结果显示，轴瓦周向应力分布取决于油膜压力的梯度，最大拉应力位于压力梯度最大处，而周向压应力的峰值则位于压力梯度方向改变处。

And within the help of ANSYS software, how housing thickness, plastic module of housing and oil film pressure gradient effects the bearing stress distribution is analyzed in this paper. The relationship between alloy tangential stress or radial stress or shear stress and oil film pressure or pressure gradient is also analyzed.

利用ANSYS软件分析了轴承座厚度、轴承座弹性模量和油膜压力梯度对轴瓦应力分布的影响，分析了轴瓦合金层周向应力、径向应力和剪应力的应力场与油膜压力及油膜压力梯度的关系。

It is consist of the measure of temperature, the gradient of temperature treating, sum gradient of temeprature.

本文的数字化无线温度传感器具有集成化、智能化的特点，它由温度测量、温度处理和温度值显示三部分构成。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。