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Then the stationary joint probability density, the conditional reliability function, the mean first-passage time of the optimally controlled system are obtained from solving the reduced FPK equation, the backward Kolmogorov equation and the Pontryagin equation, respectively of fully averaged systems.

求解与之相应的Fokker-Planck-Kolmogorov方程得最优控制系统的联合概率密度,进而求得最优控制系统的平均幅值;求解与之相应的后向Kolmogorov方程得最优控制系统的条件可靠性函数,进而求得首次穿越时间的条件概率密度;求解与之相应的Pontryagin方程得最优控制系统的平均首次穿越时间。

Then the FPK equation governing the joint probability density of amplitude and phase, the backward Kolmogorov equation governing the conditional reliability function, and the Pontryagin equation governing the mean first passage time are established, respectively.

随机微分方程。在此基础上,建立联合概率密度满足的Fokker-Planck-Kolmogorov方程、条件可靠性函数满足的后向Kolmogorov方程以及平均首次穿越时间满足的Pontryagin方程,分别求解这些方程得到联合概率密度、条件可靠性函数以及平均首次穿越时间。

The mean baseline low density lipoprotein cholesterol dropped by 53.2%, and mean high density lipoprotein cholesterol increased by 14.7%.

平均基线低密度脂蛋白胆固醇下降了53.2%,平均高密度脂蛋白升高了14.7%。

Results The anterior spiracle, posterior spiracle and cephalopharyngeal skeleton regularly changed with daily larval growth. The three indexes including the sclerotizes area of pharyngeal sclerite, the average optical density of pharyngeal sclerite and the posterior spiracle could be used as the ideal indexes of larvae age.

结果 丝光绿蝇幼虫前气门、后气门、头咽骨均随着时间的延长发生规律性变化,幼虫后气门平均光密度、咽骨骨化面积及其平均光密度这3项指标是推断幼虫日龄较理想的指标。

But the latent period for reaching the platform above the water in Morris Water Maze of the Mn-exposed group was not different from that of control group. There was a significant increase in the areas,glial fibrillary acid proteinimmunoreactivity and the average proportional densities of GFAP-positive elements in nucleus caudate and accumbens in the high Mn-exposed group, and a significant reduction in the tyrosine hydroxylase immunoreactivity and average proportional densities of TH-positive elements in substantia nigra,ventral tegmentum area of midbrain and nucleus caudate in the high Mn-exposed group.

2高剂量染锰组尾状核和伏隔核的面积、胶质细胞纤维酸蛋白免疫反应强度及反应阳性产物的平均相对密度均较对照组显著升高;(3)高剂量组仔鼠黑质、中脑腹侧被盖区和尾状核的酷氨酸氢氧化酶免疫反应强度及其反应阳性产物的平均相对密度均比对照组明显下降。

There was a significant increase in the areas,glial fibrillary acid proteinimmunoreactivity and the average proportional densities of GFAP-positive elements in nucleus caudate and accumbens in the high Mn-exposed group, and a significant reduction in the tyrosine hydroxylase immunoreactivity and average proportional densities of TH-positive elements in substantia nigra,ventral tegmentum area of midbrain and nucleus caudate in the high Mn-exposed group.

2高剂量染锰组尾状核和伏隔核的面积、胶质细胞纤维酸蛋白免疫反应强度及反应阳性产物的平均相对密度均较对照组显著升高;(3)高剂量组仔鼠黑质、中脑腹侧被盖区和尾状核的酷氨酸氢氧化酶免疫反应强度及其反应阳性产物的平均相对密度均比对照组明显下降。

Our results show that impacts of these environmental factors on geographical distributions of Chinese Chiroptera are in order of annual average temperature,days of temperature above zero degree,January average temperat...

结果表明,按其影响程度大小,影响中国翼手目动物地理分布的连续型环境因子依次为年平均气温、大于零度日数、一月份平均气温、无霜期日数、年降雨量、年平均相对湿度、七月份平均气温、海拔高度和年日照时数,其中年日照时数和海拔高度为负影响;影响翼手目种数密度分布的决定环境因子是年降雨量,但年平均气温也有明显作用。

objective to explore the related factors of recurrence of chronic subdural hematoma after neurosurgery.methods the related aspects that affected the recurrence in 113 cases with chronic subdural hematomas after neurosurgery were reviewed,and the factors were evaluated by the medical literature.results 5 patients recured after neurosurgery,and 1 patient died.rate of recurrence and death were 4.4% and 0.9% respectively.conclusion age,abnornmal blood coagulation mechanism,density,pneumatosis and drainage volume would affect the prognosis.

目的 探讨影响慢性硬膜下血肿(chronic subdural hematoma,csdh)术后复发的因素。方法回顾2003~2004年本院手术治疗的113例csdh患者,并结合有关文献进行相关分析。结果术后复发5例,死亡1例,复发率和死亡率分别为4.4%和0.9%。复发的5例患者平均年龄69.6岁。其中因服用抗凝剂复发1例,因术后大量颅内积气复发1例,高密度复发1例,等密度到混杂密度复发2例。结论患者的年龄、凝血机制异常、血肿的密度、术后积气和引流量的多少影响csdh患者的预后。

By regression of experimental data, therules of the linkage between these factors, which will provide a theoretical basis for designing BBP with different scales.3 Using thermal analysis technology and dynamic thermogravimetry, the paper studies combustion kinetic characteristics of 3 types of agricultural crops at different rate of temperature rise, and thus, achieved dynamic parameters of these fuels at different rate of temperature, established dynamic model of straw combustion, which reflects the dynamic process in the fast combustion area.4 Characteristics of straw briquette combustion was experimented, focusing on the impact of straw type, temperature, air supply, and density, diameter, and weight of briquette on the combustion speed, and the following conclusions were drawn:(1) combustion of straw briquette fuel is static permeation diffusion combustion;(2) temperature has a larger impact on the speed of straw briquette combustion than air supply; the higher the combustion temperature is, the faster volatilizable component separates out, and the less steady the combustion is;(3) density of briquette fuel has impact on the speed of volatilizable component separation and therefore the combustion speed;(4) increase of diameter and weight of briquette fuel increases the average combustion speed in the initial stage, and that in the later stages is comparatively steady;(5) the proportion of volatilizable component in straw briquette fuel is high, therefore, the temperature control during combustion under the rational ventilation condition is essential to ensure its safe combustion.5 Using the above-mentioned results of experiments and theoretical analysis, and based on thought of hydraulic driven and bi-direction compression, the hydraulic system and compression parts of the HBP BBP are re-designed in terms of industrialization.

利用热分析技术,采用动态热重实验法,对我国的三大农作物秸秆在不同升温速率下的燃烧动力学特性进行了较系统的研究。得到了各原料在不同升温速率下的动力学参数;建立了秸秆燃烧的动力学模型,该模型反映了秸秆迅速燃烧区的动力学过程。 4 对秸秆成型燃料的燃烧特性进行了试验研究。着重研究了秸秆河南农业大学博士学位论文巫的种类、温度、空气供给量、成型燃料密度、直径、质量对成型燃料燃烧速度的影响并得出如下主要结论:①秸秆成型燃料的燃烧方式属于静态渗透式扩散燃烧。②秸秆成型燃料燃烧速度受温度的影响大于通风量燃烧速度的影响:燃烧温度越高,挥发分析出速度越快,燃烧平稳性愈差。③成型燃料密度影响成型燃料挥发分的析出速度,影响燃烧速度。④成型燃料直径和质量的增加,使得燃烧初期的平均燃烧速度增大,中后期的平均燃烧速度相对平稳。⑤秸秆成型燃料含挥发分比例高,因此合理配风下的控温燃烧是保证其完全燃烧的关键。 5运用已取得的试验和理论分析结果,以液压驱动、双向成型为基础,从产业化的角度对HBP型成型机进行了液压系统和成型部件的改进设计;同时采用了二级预压机构,使该成型机的生产率达到 500kg.hd;单位能耗 60kwh。上'左右,磨损件修复周期 300小时左右,基本解决了影响生物质固化技术在国内推广的技术难题。

The mean arterial pressurewere measured in each rat.the stereological parameters such as the myocardial surface density、the myocardial volume density、the myocardial specific surface and the mean free path etc.were measured and numerated.

建立腹主动脉缩窄性高血压大鼠模型,测定大鼠平均动脉压、大鼠心肌的表面积密度、体积密度、比表面及平均自由程等各项体视学参数并计算。

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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。

I'm running my simile to an extreme.

我比喻得过头了。