平均密度

On the Contrary, there was no obviously different in low group.? Observed by electron microscope: The wider of synaptic cleft was increasing, the posts nutpick membrane was thinner, and the synapse I activity area was decrease, all these have significant different from that of control group in high and middle group, But no obviously change in low group.

灌酒精90天后，与对照组相比，胶质细胞纤维酸蛋白免疫反应强度增强及反应性胶质细胞的平均相对密度升高，中、高浓度组有显著性差异（p＜0.01），而低浓度组无明显变化。

Total mass of the universe , total value of one dimensional space of the universe , age of the universe and average mass density of the universe .

宇宙的总质量，宇宙的一维空间总尺度，宇宙的年龄，宇宙的平均质量密度并要求这些计算结果必须和已有的天文观测数据相符。

Computer image analysis was used to measure the average optical density of synaptophysin.

方法采用免疫组织化学方法，观察突触素在不同周龄的人胎儿海马中的表达水平，利用计算机图像分析技术测量不同周龄阶段海马突触素表达的平均光密度。

Average optical density of positive cells were deteched. SPSS9.0 software was used to analyze the data.

测定阳性细胞的平均光密度值作为统计参数，利用SPSS9.0统计软件进行统计学处理。

Granularity in some loss of image layers, the operation does not occur with the color at that time and partial color, tone, UN-uniform, density range in d = 0.1-2.6, dye particles rough, with a platform for scanners, image magnification 4-7 times, and then a larger image distortion.

在扩印洋图像条理有些吃亏，操息不当时会不入现色彩不不均、偏色、色调不平均，密度边界在D=0.1-2.6，染料颗粒粗劣，用平台扫描仪扫描，图像不扩不小倍率4-7倍，再不扩不小图像逼真

All above laid a foundation for the research of polarimetric information processing and application. Then, target optimum polarization and polarimetric synthesis technique were studied. By constraining polarimetric states of transmitting and receiving antennas, co-polarized and cross-polarized signatures were obtained. Because the received wave was partially polarized, completely polarized, completely unpolarized, and total available power signatures were defined based on the power of the return wave.

接着，论文深入研究了目标最佳极化和极化合成技术，通过约束收发天线的极化状态可以得到共极化特征图和交叉极化特征图，由于雷达接收的电磁波通常是部分极化的，根据接收波的平均功率密度可以得到未极化特征图、完全极化特征图和匹配极化特征图，在极化特征图空间中搜索可以很容易地获得目标的最佳极化，这些目标最佳极化可以作为极化目标识别和分类的极化特征。

Firstly, Dempster-Shafer is developed by not only considering the certainty of the evidence, but also considering the average support of the evidence to different subsets in the assignment framework so that it can give more reliable combination result. Secondly, amplitude ratio feature and Euclid distance of the probability density distribution function in Pearson graph from different temporal SAR images are extracted to present change feathers in different scales. Finally, the improved Dempster-Shafer algorithm is applied to fuse the two different features to detect change information of SAR images.

首先通过综合考虑证据本身的确信度和证据对辨别框架中子集的平均支持度进行证据间的加权合成，改进证据理论对证据的合成，提高其可靠性；然后提取不同时相图像间的散射幅度的对比度和概率密度分布函数在皮尔逊图中的欧式距离，两种特征参数代表了像元级和区域级不同空间尺度下微波遥感图像中关于地表变化的信息；最后将改进的证据理论用于两特征之间的融合处理，得到地表的变化信息。

Three parameters were considered in this new model,i.e, the average rate of fluid through every crack,the number density of cracks in per unit volume and the extent of cracks＇ penetrance.

笔者在此基础上建立起一个新的渗流模型，着重考虑了3个因素，即：流体通过每一裂隙面的平均流量；单位体积内裂隙的数密度；裂隙贯通程度。

The results indicate that the photooxidation is obviously helpful to denitrogenation of the Shenfu macerals.

结果表明：光氧化对神府煤不同密度级组分的脱氮有明显效果；光氧化后固体残留物交联点间的平均分子量减小，交联度增加。

MMP25 may play an important role in embryo implantation and placentation.

蜕膜组织中MMP25主要在腺上皮细胞表达，自然流产组的表达微弱，两组平均光密度分别为0.25±0.13和0.21±0.12，差异有统计学意义(P＜0.05)。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。