查询词典 continuous distribution

Suppose Y is an absolutely continuous random variable symmetric about 0 with probability density function f and cumulative distribution function F.

假设Y是一绝对连续且对称於0的随机变数，其机率密度函数为f，而分布函数为F。

The influence of air gap on stress distribution of continuous casting billet in mold was investigated.

着重研究了气隙对坯壳应力分布的影响。

The anatomical study deepens the knowledge of G-type conducting cells: 1 It proves the theory of two depositional process for secondary wall (Bierhorst, 1960): the discontinuous cellulose layer is laid down before the continuous lignified layer; the former layer is prone to be broken down, while the latter is highly decay-resistant; 2 It suggests that the cellulose primary and secondary walls of tracheids are not perforated. Instead of longitudinal pits (Li, 1992), the lignified tracheid secondary wall of Hsüa possesses irregular simple perforations; 3 In Hsüa reflexa and Huia gracilis, the perforation casts may represent the thickness of lignified secondary wall; 4 The wall structure of G-type tracheid is diversified. At the genus level, the secondary wall structure differs in the distribution, internal shape and structure of the perforations; 5 Perforations of some G-type tracheids combine the characters of S-type tracheids in their distribution, density and diameter.

解剖学的研究加深了对G-型输水管胞的认识 1）验证了管胞次生壁分两个阶段形成的理论（Bierhorst，1960），即先后形成不连续的纤维质层和连续的木质化层，前者易被分解，后者抗侵蚀性强；2）证明管胞纤维质的初生壁和次生壁不具穿孔，Hsüa管胞的木质化次生壁具有不规则的简单穿孔，而不是纵列的纹孔（Li，1992）；3）Hsüa reflexa和Huia gracilis的穿孔铸体可代表木质化次生壁的厚度；4）G-型管胞壁层结构具多样性，植物属一级的分异主要表现在次生壁穿孔的分布、孔腔形状和结构的不同；5）某些G-型管胞的穿孔在其分布、密度和孔径方面可兼有S-型管胞的特征。

Combining with the temporal and spatial distribution spatial distribution species radiation intensity,the detailed mechanism of the generation of laser induced species radiation was discussed, the continuous radiation comes from the Bremsstrublung emission of energetic electrons ejected from the target and recombination of electron and ion near target, the primary mechanism of atomic excitation and ion excitation in plasma is inelastic collision between the elemental species and high-kinetic energy electron,the model can explain the experimental results qualitatively.

讨论了激光诱导发光的机理，认为等离子体羽中连续辐射背景光主要来自近靶处高能电子的韧致辐射和电子与离子的复合激发，原子和离子光谱线主要由等离子体中高能电子的碰撞传能激发所引起，并用之较好地解释了所观察的实验现象。

The system is controlled by continuous review installation stock policies. This paper presents an improved approximated method that the leadtime demand of warehouse is approximated by the normal distribution, and the leadtimes demand of retailers are approximated based on negative binomial distribution.

论文给出改进的近似方法，即用正态分布近似分销中心提前期内需求的分布，用更符合实际的负二项分布近似零售商提前期内需求分布，从而建立了二级分销系统期望总成本近似模型。

Result: 1. The method of arc-needle injection with 131I-iodinated oil step-by-step sector-shapely improved obviously the drug distribution, comparing with routine linearity injection. 2. SPECT image reconstruction detect 131I-iodinated oil three-dimensional distribution quantitatively. 131I-iodinated oil metabolism equation may obtained by continuous measurements, in order to calculate absorption dose of p particle at target. 3. ZT glue lengthens obviously 131I-iodinated oil retention in mouse local subcutis and rabbit liver which can rise local radiation effect, decrease injury at normal tissue.

结果：1、弧形针分段扇形注射~(131)I-碘化油，比常规使用的线性注射明显改善药物弥散均匀度。2、SPECT断层扫描定量检测~(131)I-碘化油的三维分布，连续测量建立~(131)I-碘化油的代谢方程，并计算~(131)I对靶区的β辐射贡献的吸收剂量。3、ZT胶明显延长~(131)I-碘化油在大鼠皮下、兔肝脏内的滞留。

The result shows that visitor distribution of World Expo shows kind of internal unbalance featured by staged continuous increase, a saw curve, uncertainness, and a difference between working days and weekends, etc.. the result also indicates that the quality and attractiveness of a World Expo is the determinant of both the amount and distribution of visitors, and that there is an overlap effect of external factors forming peak or valley day of visitors.

研究表明：世博会参观者分布有其内在不均衡性，如阶段性持续递增、锯齿性曲线、不确定性、工作日和节假日分布差异等；世博会办展质量和吸引力是影响参观者人数和分布的最主要因素；影响参观者人数的外生变量，具有叠加和共振效应，因而形成参观者高峰日或低谷日。

The distribution range of Chimonanthus germplasm includes 13 provinces which is wide and continuous, the current distribution center is from the South of Qinling Mountains to the East of Hengduan Mountains.

现知中国蜡梅属植物主要分布于我国的13个省，其水平分布很广，很连续，主要分布于秦岭以南、横断山脉以东的广大地区。

We found, GLP-1-IR cells in various guts of rat, pig and foetus of human with distribution scatteredly among the basal portion of intestinal glands. The cell shape corresponded with open type cells, i.e. L-cells. The density of GLP-1-IR cells was different in races, but the distribution regularity of GLP-1-IR cells was same. It showed that a continuous increase from the proximal to the distal portion of small and bowel.

结果发现：在各段肠管都可见到GLP-1-IR细胞；GLP-1-IR细胞散在于肠腺的柱状上皮细胞之间，多位于肠腺的基底部，呈开放型内分泌细胞形态，即L细胞；不同种属问GLP-1-IR细胞密度不同，但分布规律相同，即自小肠和大肠的近端向远端逐渐增大。

The uniform distribution of phase data and the Rayleigh distribution of amplitude data are investigated and the bit allocation formula is deduced according to the differential entropy of continuous information resource, which points out that the mean of amplitude is the only factor.

进一步研究了相位的均匀分布特性和幅度的瑞利分布特性，由连续信源微分熵定义推导了幅相比特分配的幅度均值公式，指出幅度均值是决定幅相比特分配的唯一因素。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。