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In this paper we proposed an improved method which changes the definition of the 4-neighborhood model. we call it side neighborhood minimum absolute weight prediction tree technique. lt can simplify the algorithm and improve the results of lossless compression.

本文对预测树方法进行改进,提出一种侧邻域最小绝对权值预测树方法,通过改变预测树的四邻域定义,使构造预测树的算法简化,并且,实验结果表明,对不同类型的多光谱遥感图像,SNMAW的压缩效果与MAW的压缩效果相近或有所改善。

The higher the concentration of Cefotaxime was, the lower the rate of differentiation was; when the concentration of Cefotaxime was high 400~500mgL^(-1, the growth of callus was inhibited. However, the effect of Carbenicillin on callus was little and the differentiation of adventive buds was promoted under appropriate concentration. When the Carbenicillin's concentration was 200mgL^(-1), the differentiation rate reached the maximum 68.8%.

头孢霉素浓度愈大,213品种不定芽分化频率愈低,当头孢霉素浓度较高400~500mgL^(-1时,愈伤组织生长受到抑制;而羧苄青霉素对愈伤组织影响很小,在适宜的浓度下能促进不定芽分化,213品种在羧苄青霉素浓度为200mgL^(-1)时,分化频率达到最大值68.8%。

Increasing the calcining temperature at 1500℃ 5h, the morphologies of the product became the big and wide vermiform-fiber form particles, the length was about 2.5 μm, and the width was about 700 nm. In addition, the vermiform-fiber form particle could be found in the filtrated precipitate with the additional ammonium sulfate. If the ratio of ammonium sulfate to alum is above 1, the vermiform-fiber form particle was formed. After calcined at 1500℃ 5h, the particle grow up to 2μm. Adding ammonium sulfate was also reduced the particles size of alumina because the surface area of the products was increased by increasing the quantity of ammonium sulfate.

在明矾与氨水沉淀物经过滤后再额外添加不同硫酸铵的比例,1200℃ 1hr煅烧后,发现添加硫酸铵比例在1以上,其型态亦为蠕虫状纤维,当以1500℃ 5hr煅烧,蠕虫状纤维型态粒子亦变为又大又胖,其粒子尺寸长度约为 2 μm 宽度约为 500 nm;且将煅烧1200℃ 1hr测其比表面积值,会随著硫酸铵的添加量增加,粉体的表面积会增加且粉体变细,添加硫酸铵比例为 4 者所得粉体粒径最小,从比表面积所得结果估计约 150 nm 。

First, the velocity and temperature data were collected in the period of simulation using three-cup anemoscope and hygrothermograph in different heights. Then Monin-Obkhov wind and temperature vertical profile were fitted by applying least square solution. Temperatures of different time in specific point were measured. Firsthand information in land surface was collected and anthropogenic heat profile of different time was investigated.

首先,利用在不同高度上面设立的三杯风速仪和温湿度计收集了两个计算模拟时段的风速和温度资料,然后采用最小二乘法拟合得出Monin-Obkhov风温廓线;在区域内布点测量不同时段的温度值,收集地表的一些原始资料;调查区域内的不同时段的人为产热分布。

the conditions of acquisition of minimum deviation is proved by means of rolle's theorem and the reversibility principle of beam path for triple prism, it is that the angle of incidence is equal to the angle of emergence for monochromatic incident beam.

利用数学中的罗尔中值定理及光路的可逆性原理证明了三棱镜获得最小偏向角的条件,即单色光线的入射角等于出射角。

The calculation principles of PIM are analyzed and applied to elasticity mechanics problems.

文中分析点插值法的计算原理,给出其在弹性问题中的应用,并与有限元法以及移动最小二乘法进行比较。

ArcSin approximation with minimal error must be found.

在近似的 ArcSin 中,在最小误差允许范围内,肯定可以找到这些值。

The parameters A, B, C and D define the shape of the curve for the function and the values for a fit to theArcSin approximation with minimal error must be found.

参数 A, B, C 和 D 决定了函数曲线的形状。在近似的 ArcSin 中,在最小误差允许范围内,肯定存在这些值。

Soil enzyme and microflora rhizosphere effect of urea fertilizer treatment and biological fungus fertilizer treatment was less than organic fertilizer treatment.

施用有机肥处理对土壤微生物和土壤酶根际效应值影响最明显,菌肥处理影响最小。

For a large shell-type Power transformer,the ampere-turn distributions under the maxium,rated and minimum taps have been obtained by using the above principles,at same time,the leakage magnetic fields and the impedances of the trans...

应用于一台360MVA,525/18kV的壳式铁心变压器,计算出了最小、额定和最大分接情况下并联线圈中的电流分配和阻抗电压,并与实验值做了比较。

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The concept of equivalent rotationally rigidity is offered and the formula of rotationally rigidity is obtained.

主要做了如下几个方面的工作:对伸臂位于顶部的单层框架—筒体模型进行分析,提出了等效转动约束的概念和转动约束刚度的表达式。

Male cats normally do not need aftercare with the exception of the night after the anesthetic.

男猫通常不需要善后除了晚上的麻醉。

Its advantage is that it can be used in smaller units.

其优点在于可以在较小的单位中应用。