A series homopolyme of ethylene synthesised by metallocene catalyst was analyzed by the high temperature gelatin permeation chromatography. The results showed that the molecular weight distribution changed not too much when the ratio of Al/Ti ranging between 1000 and 4000, while the molecular weight distributed increased from 2.48 to 2.81 when the ratio ranging between 4000 and 7000; catalyst D had the lowest activity to be used as asymmetric metallocene catalyst; the curve of molecular weight moved much to the left with the increases of temperature and two active centres appeared when the temperature is 70℃.

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Concrete ; stress-strain curve ; free energy ; internal variable ; damage ; Weibull distribution

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The general form or a quantity indicative of the general form of a statistical frequency curve near the mean of the distribution.

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The characteristics of growth curve were analyzed,a Gauss distribution function training model was established by fitting education law.With the actual higher vocational education,the design methods and steps of professional teaching plans were given,and the model was optimized by using correlation analysis.

分析了生長曲線的特征，依據(jù)教育規(guī)律建立了Gauss分布函數(shù)的人才培養(yǎng)模型人人艹在线免费，結合高等職業(yè)教育實際給出專業(yè)教學計劃的設計方法和步驟caoprom在线公开视频在线频，運用相關分析對模型進行優(yōu)化。

From statistics, the theorem that the distribution of sample means taken from a large population approaches a normal, Gaussian, curve.

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The energy distribution of the focused laser spot has Gaussian profile, and if the exposure dose threshold of the photoresist is less than and far away from the peak of that Gaussian curve, the linewidth will be less affected by the variation of exposure dose or exposure dose threshold, and so, will improve the linewidth stability.

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On the basis of the minimum scale soil nutrient distribution generated randomly based on the given values of mean, standard deviation and related distance, or obtained by geostatistics analysis based on soil sampling data, the amount of fertilization, yield and fertilization use efficiency at different scales were calculated by related fertilizer models and yield models supported by geographical information system and computer simulation, then the simulation result was intuitively visualized by curve graphics and RGB primitive colors synthesized image and thematic maps.

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They are clay, mud shale, gravel, oil shale, mudstone, schist, basalt, limestone, gritstone, dolomite, breccia, granite, and quartzite. We give the feature curve and distribution feature equation of these rocked landslide.

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Magnetic induction intensity's signal which the removable Hall probe head will examine using the monolithic integrated circuit technology demonstrated on the lattice screen, moves the Hall probe head in the magnetic field then the magnetic field distribution rule demonstrates the Helmholtz coil axis on by the curve and the number form obviously.

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According to the local condition, it figured out a site category needed for the research and selected an optimal harmonic curve using the growing stock-age distribution map.

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