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The apparent degradation reaction activity energy of PET and PC are evaluated to be 27. 19kJ. mol〓 and 35. 75kJ. mol〓 in system noncritical region respectively. The mass transfer and scatter, which are the controlling factors of degradation in system noncritical region, change into chemical reaction in system critical region, where the activity energy of PET and PC are evaluated to be 89. 79kJ. mol〓 and 80.61kJ. mol〓 respectively.

在系统的非临界区域,PET、PC的降解为液固相反应,反应速率很低,其降解反应表观活化能分别为为27.19KJ.mol〓和35.75KJ.mol〓,为传质、扩散控制;在系统的临界区域,PET、PC的降解为液态均相反应,降解反应速率显著提高,其降解反应表观活化能分别为89.79KJ.mol〓和80.61KJ.mol〓,为化学反应控制。

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。

It showed that the traits of low density,unbalanced spatial distribution and unbalanced inner structure.

产业布局的演变是以集聚与扩散这两个相互对立、相互交替的过程来体现的。

A KCl coat denuder was employed for the measurement of divalent mercury(Hg2+)in air.

用KCl涂层的扩散管测定了大气中的二价汞(Hg2+)。

The improved method of filter sampling off-line analysis using both parallel plate organic denuder and backup filter has a good agreement with in-situ online measurement.

同时采用平行板有机物扩散吸收管和后置膜的离线分析方法同在线观测的结果具有比较好的一致性。

A new analytical system has been developed for the determination of total gaseous selenium content in the atmosphere by honeycomb denuder collection followed by measurement with differential pulse cathodic stripping voltammetry.

建立了一种新型的用于检测大气中气态硒的分析系统,即蜂窝状扩散管采集微分脉冲阴极溶出伏安法系统。

The purpose of this study was to measure the gaseous inorganic acids / bases and volatile organic compounds emitted during the business of central Taiwan Science Park, and establish the air quality data. Two sampling sites were located in the north and south of the Park. The measuring instrument was the annular denuder system for inorganic acids and bases and the method for VOCs' measurement was according to Taiwan's EPA method NIEA

中文摘要本研究之目的乃在建立中部科学园区之空气品质污染物浓度资料,监测地点为基地北侧的土地公庙及南侧的国安国小,监测污染物包括空气中气状、粒状的无机酸碱及挥发性有机化合物等气体,监测仪器及方法依据则分别为环型扩散采样器及环保署环境检验所公告之NIEA A715.12B方法。

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。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。