查询词典 diffusion

On study of technology adoption timing and innovation diffusion, we get the firm's optimal threshold of technology adoption under the uncertainties about both the time of the arrival and efficiency of improvement of technologies, and give the relevant cumulative probability distribution function regarding adopting technology timing.

在采纳时机及创新扩散研究方面，在新技术的到达时间和提高效率都不确定的情况下，得到了企业最优的技术采纳的投资门槛值，并给出了企业采用时机的累积概率分布函数。

The Green's function in Cartesian geometry can be used to replace the complex Green's function in cylindrical geometry when solving the neutron diffusion equation in cylindrical geometry.

用格林函数节块法求解圆柱几何中子扩散方程时，可用平板几何格林函数代替复杂的圆柱几何格林函数。

At first, preprocessing with the image pyramid and diffusion-filtering technology; then abstracting the boundary-outline information; carrying on the logarithmic coordinate transformation of the abstracted boundary-outline information to get bar chart of the logarithmic coordinate; calculating the value of Cs to get all the phase match points; calculating the value of the degree of approximation to judge the shape matching.

本发明涉及一种基于Shape Context的人脸形状匹配方法，首先采用图像金字塔及扩散滤波技术进行预处理；再利用Canny边缘检测算法和轮廓提取算法提取边界轮廓信息；对提取的边界信息进行对数极坐标变换，得到对数极坐标直方图；通过计算Cs值，获得所有相匹配点；计算相近似度值，进行形状匹配判断。

This paper is concerned with travelling wave solutions of the delay reaction-diffusion equation.

本文研究时滞反应扩散方程行波解的存在性。

Deleuze is important both in the diffusion of poststructuralist theories and in the turn of philosophy towards the postmodern.

德勒兹在后结构理论的扩散的哲学向后现代的转折上具有重要意义。

In order to obtain the qualified chemical constituents of steel, the final stage in the steel making is deoxidization. With the great chemical affinity between Silicon and Oxygen, Ferro-Silicon is a strong deoxidizer in steel making, for sedimentation and diffusion deoxidizer.

为了获得化学成分合格的钢和保证钢的质量，在炼钢的最后阶段必须进行脱氧，硅和氧之间的化学亲和力很大，因而硅铁是炼钢较强的脱氧剂用于沉淀和扩散脱氧。

The Principle of Formaldehyde Emission, Diffusion and Absorption in Desiccator Method

篇名 干燥器法中甲醛释放，扩散和吸收的规律

Methods:Using JAEGER Master Screen diffusion determinator to determine respiratory physiologic parameters respectively both in period of acute episode and remission.

采用肺功能仪测定哮喘儿急性发作期和缓解期的呼吸生理参数。

The rate-controlling steps of deuterating and dedeuterating reaction in α+β region are assumed to the nucleation-growth and diffusion in deuterium of deuteride respectively.

在α+β相域，氘化与去氘化反应的速控步骤分别为氘化物的成核-长大过程和氘化物中氘的扩散过程。

The measurements of self-diffusion coefficient,spin-spin relaxation and interproton distance at 318 K suggest that N,N′-bis-α,ω- alkane propane diammonium dibromide (16-3-16) quasi-global micelles are formed in the dilute solution at a concentration of 0.26 mmol/L and the head groups are in a saw-toothed form staying at the surface of the micelle to overcome the strong electrostatic repulsion force.

从自扩散系数、横向弛豫和质子距离等NMR测定参数推测，在浓度为0.26 mmol/L（318 K）的N，N′-双-α，ω-丙烷溴化铵(16-3-16)溶液中形成了近似球形的胶束，胶束表面的带正电荷的铵基极性头呈锯齿状排列以减弱分子间静电排斥力的影响。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。