分布的

By analysing and calculating the variations in distribution of axis direction contact force and contact pressure on screw thread, the influence of errors of pitch and taper of casing screw threads to the properties of resisting pull and sealing liquid and gas are studied. Based on the result obtained through analysis, a reasonable tolerance distribution for pitch and taper is proposed.

最后，本文通过分析计算内外螺纹不同的螺距、锥度参数配合时，轴向载荷及接触压力在螺纹上分布的变化，研究了套管螺纹的螺距、锥度参数误差对套管螺纹接头的拉伸和密封性能的影响，并依据分析结果提出了二参数公差带的合理分布。

In the present testing conditions, shock sensitivity increases with increasing particle size for unimodal distribution explosives. Shock sensitivity increases with increasing content of coarser grains for multimodal distribution explosives.

对单粒度分布的炸药试样，在本研究的试验条件下，冲击波感度随炸药粒度的增大而提高；对粒度级配后的双峰或三峰分布的炸药试样，随较大颗粒比例的增加，冲击波感度提高。

Even the doctoral degree, long recognized as a required " union card" in the academic world, has come under severe criticism as the pursuit of learning for its own sake and the accumulation of knowledge without immediate application to a professor's classroom duties.

磨擦的结果是，在叶面上服从正态分布的地方就会产生两种分布方式，顶点上主要是小块，其他的地方是小块，其他的地方是大块的地方。

The improved Pareto multi-objective optimization with GA adopts non-dominated ranking, elitist preserve and niche approaches, and proposes individual vector module adaptive function as wash out rule. As an example, two duality functions are used to validate the two algorithms.

通过两个多元函数的最小值优化算例验证，两种方法均获得较为均匀分布的Pareto前沿，并且改进的Pareto遗传多目标优化算法由于采用了小生境技术，使得最优解的分布更加均匀，避免了局部收敛的问题。

The paper alse proposes that" there occurs anorogenic alkali-granite conter-overstep distribution in Altay orogenic belt" with was resulted from conter-moving of tensional stress, and the bundary of conter-overstep distribution could be used as a sign to determin suture belt of ancient plates.

本文同时还提出了&阿尔泰造山带存在有非造山富碱花岗岩反向超伏分布&的新观点，产生非造山富碱花岗岩反向超伏分布的机制是地幔上穹引起的张性应力逆向推移，并认为非造山富碱花岗岩反向超伏的起始界线可做为确定古板块缝合线的重要依据之一。

The similar results were also found in their parents, siblings and younger generation. Results Results from binominal distribution analysis showed that the number of cases in the families of NIDDM was significantly bigger than the theoretical range, indicating that there was significant familial aggregationin in the occurance of NIDDM. Simple and multiple logistic regression analysis also showed that genetic factor was one of the most important factors in the development of NIDDM.

结果 病例组一级亲属总的患病率为3.47％，与对照组的1.03％相比，差异有非常显著性（χ2 =17.66，P＜0.01；无论其父母、同胞或子女，均以病例亲属的患病率显著高于对照；Ⅱ型糖尿病家族中实际发病数超过其二项分布的理论概率范围，即Ⅱ型糖尿病的分布呈明显的家族聚集性；单因素和多因素logistic回归模型拟合也提示，家族史仍是Ⅱ型糖尿病的最主要危险因素。

Results? 6 cases in X-ray film revealed round or oval stones in areatus distribution in the areas of renal papillae and medulla. 3 cases of IVP revealed cystic or hair-brushed dilation. 5cases in B-ultrasound revealed little anechoic area and strong echo light spot in radial distribution with acoustic shadow. Unenhanced CT of 6 cases revealed spotted or areatus stones surrounding minor renal calices with collecting tube system dilation and enhanced CT showed artifacts of stones magnification because of the collection of contrast medium around the stones. Conclusion?

结果 X线平片检查6例，表现为肾乳头、髓质区见簇状排列的圆形、椭圆形致密影；IVP检查3例，显示肾集合管囊状、刷子状扩张；B超检查5例见肾髓质内呈放射状分布的小无回声区和强回声光点，其后方伴有声影；CT检查6例，平扫呈环绕肾小盏分布的点状或簇状钙化灶，集合管囊状扩张，增强后因钙化周围的集合管内造影剂聚集，造成钙化影增大的假象。

"Davidia involucrate" was a rare valuable and endangered plant in China. In this article, We studied the distribution pattern of its population with t test of Dispersal index, X^2 test of Poisson distribution and F test of Morisita's index. Its assemble intensity is also analyzed through Negative binomial index, Green's index, Lloyd's index and Patchness index.

采用扩散系数的t检验、Poisson分布的x^2拟合检验及Morisita指数的F检验来研究珙桐种群的空间分布格局类型，用负二项参数、Green指数和Lloyd的平均拥挤度m(上标*与聚块性指标来研究珙桐的聚集强度。

With Yangtze delta tidal flat as an example, through the analysis on the magnetic characteristics of tidal flat sediment and the study on the space distribution of heavy metal elements, this thesis discussed the impact to Shanghai sea bank brought by heavy intensity development, and the interrelation between sediment power effect and heavy metal pollution space distribution. Utilizing the advantage of artificial intelligence neural network, in conjunction with environmental chemical analysis, from the angle of view of sediment magnetic characteristics, it analyzed the connection mechanism between magnetic mines and heavy metal element within tidal sediments, and built a quantitative magnetical diagnosis model, in attempt to calculating the tidal heavy metal pollution status from the magnetic measurement data of sediments and assess it's impact to the environment.

中文题名长江口潮滩重金属污染的磁诊断模型研究副题名外文题名论文作者许羽导师俞立中教授学科专业自然地理学研究领域\研究方向资源与环境信息系统学位级别博士学位授予单位华东师范大学学位授予日期2001 论文页码总数111页关键词长江口潮滩沉积物环境磁学重金属污染馆藏号BSLW /2001 /X145 /11 本文以长江口南岸潮滩为例，通过对潮滩沉积物磁性特征的分析、重金属元素空间分布的研究，探讨了上海滨岸带高强度开发对潮滩环境质量的影响，以及沉积动力作用与重金属污染空间分布格局的联系。

In the present paper, a theoretical model of the mobility for multidisperse particles is developed. The present model is the extension of the previous theoretical model and the semi-empirical model for the monodisperse partcles. This model includes the influence of particle size distributions and is suitable for all particles with different materials and with different size distributions.

通过理论分析，本文提出了多分散性尘粒电迁移率数学模型；此模型是典型的电迁移率模型和单分散性尘粒电迁移率半经验模型的扩展，它考虑了粒度分布的影响，适用于各种物质的尘粒和各种粒度分布的尘粒。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。