查询词典 projection gradient method

The expression of exponential curve is brought out to describe positive temperature-gradient of this bridge in this dissertation. Moreover, the relation of different factors to positive temperature-gradient is determined quantitatively.

根据计算研究结果，定量地确定了各影响因素与正温度梯度曲线的关系，证明了太阳辐射强度和日气温变化的幅值是影响混凝土箱梁正温度梯度的重要因素。

METHODS: HPMSCs were isolated from placenta of fetation human by density gradient centrifuge. Following bone marrow heparin anticoagulation, human BMSCs were isolated, purified and passaged by density gradient centrifuge.

采用密度梯度离心法从胎盘中分离、纯化和传代培养人胎盘源性间充质干细胞；骨髓肝素抗凝后，采用密度梯度离心法分离、纯化和传代培养人骨髓基质干细胞。

Bone marrow was obtained from healthy adult donors. METHODS: HPMSCs were isolated from placenta of fetation human by density gradient centrifuge. Following bone marrow heparin anticoagulation, human BMSCs were isolated, purified and passaged by density gradient centrifuge.

采用密度梯度离心法从胎盘中分离、纯化和传代培养人胎盘源性间充质干细胞；骨髓肝素抗凝后，采用密度梯度离心法分离、纯化和传代培养人骨髓基质干细胞。

The whole inverse problem may be viewed as a two-stage optimal procedure, and the optimal algorithm based on gradient, such as BFGS algorithm, is adopted as the gradient of the objective functions which may be derived by using Frechet differential.

由于两次优化的目标函数的导数都是可求得的，因此采用基于梯度的优化算法，如Broyden-Fletcher-Goldfard-Shanno变尺度算法。

Produced the gradient wind equation and showed examples of gradient wind (and its difference from the geostrophic wind) in 500mb height maps.

推导出梯度风方程并在500毫八高度地图中举出梯度风的例子（以及它与地转风的不同之处）。

Intensity of solar radiation and height of haunch were found to be the main factors influencing the temperature gradient in box girder during cantilever construction, and function expression of the main factors with temperature gradient was gained.

从而验证了影响施工期间箱梁温度梯度的主要因素是太阳辐射强度和箱梁梗腋高度，定量确定了其与温度梯度之间的关系。

First, in order to achieve a performance independent of lighting conditions, the image is transformed into a Gradient Map. And then, Hausdorff distance measure is introduced to calculate the dissimilarity between two Gradient Maps.

首先，为了克服光照变化的影响，人脸图像被转换为梯度图像，然后，引入 Hausdorff 距离度量用于计算梯度图像之间的距离。

The effect of reactive aggregate gradient distribution in cement-based functionally gradient materials on its mechanical property is compared with that of homogeneous distribution.

通过活性集料在混凝土中的梯度分布和均匀分布，研究对比了活性集料梯度分布对水泥基材料力学性能的影响。

To deblur edge after image magnifying,an adaptie edge sharpness presering image magnification is put forword,which can fit edges of any direction,gradient and amplitude,utilizing the gradient imgormation of the image and the properties of the hyperbolic tangent function haing reiewing the character of a typical edge.

针对图像放大后出现边缘模糊的现象，论文考察了典型边缘的特征，利用图像的梯度信息和双曲正切函数的性质，提出了一种较好地拟合任意方向、陡度和幅度的边缘，因此能够保持边缘锐度的自适应图像放大算法。

When the stress/strain induced by the gradient during temperature cycles needs to be known, the temperature changes inconsistently, and has gradient in space.

需要知道温度变化过程中由于温度梯度产生的应力、应变时，认为温度场是瞬态的，在空间上存在梯度。

We have something to do in the new stage.

在这段崭新的时期中，我们有一些要做的。

The difference between tourism decision-making under uncertainty and risky tourism decision-making is indistinctive.

其中不确定性旅游决策和风险旅游决策的界线比较模糊，两者的区分是相对的。