查询词典 combinatorial dimension

The research contents and main conclusions are as follows:1. The present thesis adopted one-dimension interior ballistic model, regarding the ballistic spatial core as the unsteady quasi one-dimension airflow containing the friction and heat exchange between airflow and tube wall, considering the boundary layer unsteady, nonstationary condensable current; and employed the MacCormack finite difference method to write the program.

本文的研究内容及结论主要体现在以下几个方面： 1、采用了一维内弹道模型，把弹后空间的核心流部分考虑为包含气流与身管管壁发生摩擦和热交换的不稳定准一维流，边界层考虑为不稳定、非定常可压缩流，用MacCormack有限差分方法求解，编制程序进行计算，较为准确的得到了复合材料身管固壁瞬态温度场分析内边界条件所需的气流温度和对流换热系数结果。

Finally,we prove that the left global dimension of a DG algebra A is larger than or equal to the dimension of the triangulated categories Dand D~c.

最后我们证明DG代数A的整体维数是三角范畴D以及D~c的维数的一个上界。

The results indicate that the first ten step natural frequency range from 233.2Hz to 526.8Hz, the natural frequency is higher than the value specified by the standard.6. The profile equations of shaping gear ring are deduced out by profile normal line method. The involute and transition curves are automatically generated through the macro function in Solidworks. And the three-dimension model is built. Based on the three-dimension model, the deformation and dedendum stress is studied.

6应用齿廓法线法推导出了插齿加工的渐开线直齿内齿圈的精确齿廓曲线方程，并通过Solidworks中的宏功能采用Visual Basic语言编程实现了内齿圈齿廓渐开线以及齿根过渡曲线的自动生成，建立了内齿圈的精确三维实体模型，研究了内齿圈的轮齿变形及齿根应力。

The interpreter is the symbol's pragmatic dimension, while the designatum its semantic dimension, and, as a whole, the two dimensions play together as the 'meaning' of the symbol.

解释者一方是符号的语用维度，所指对象一方是符号的语义维度；二者合称意义。符号在言语表达中组合。

Consume group of distensible speed to appear to experience slump very hard to give youths brought effect from city of dimension sth resembling a net. 2009, city of dimension sth resembling a net predicts to will exceed the user of 2 million person.

从维络城消费群扩大的速度似乎很难感受到经济萧条给年轻人们带来的影响。2009年，维络城预计将超过200万人的用户。

The partial least-squares regression model is built up to forecast crop leaf water potential of estival maize.Thirdly, atmosphere aspect, the low water age has been forecasting by R/S method of fractal theory in Si Chuan middle region. The chaotic behavior of agriculture meteorologic factors (average temperature, max temperature, min temperature, temperature of the earths surface, evaporators, precipitation, relative humidity, sunlight time) time series is investigated using the phase-space reconstruction technique, and the delay time and relation dimension and min embedding dimension and Lyapunov exponent and Kolmogrov entropy is calculated. The atmosphere water potential is calculated by surveyed data, and the day change law of atmosphere water potential and the relation between it and sun radiation has been discussed.

第三，关于大气方面，利用分形理论中R/S分析法对川中丘陵区的枯水年进行了预测；利用混沌理论的重构相空间技术，确定了农业气象因子(旬平均气温、最高气温、最低气温、地表温度、蒸发量、降水量、相对湿度、日照时数)的延时、关联维数、最小嵌入维数、Lyapunov指数、Kolmogrov熵，从而证明了以上各农业气象因子的时间序列具有混沌特性，为利用混沌理论预测各气象因子提供了科学依据；利用田间自动气象站的数据计算了大气水势并探讨了大气水势的日变化规律以及大气水势与太阳辐射的关系。

Ferial li of website making a holiday that helps consumer dimension power, also began busy move to be him dimension authority a few days ago.

平日里帮消费者维权的打假网站，日前也开始忙着为自己维权。

Based on geomorphy and anthropo-factor that influence land use structure, D and S of 8 types is analyzed, and the result indicate that:(1) the complicated geomorphy is uppermost factor that influence fractal dimension of land use type;(2) the social economical level influence D and S of land use structure in a certain extent;(3) the average fractal dimension values and average stability indexes are integrative reflection of the land use structure of each region.

结果表明：(1)复杂的地貌类型是影响土地利用类型D 值和S值的最主要因素；(2)社会经济发展水平一定程度上影响土地利用类型的分维值和稳定性指数；(3)区域土地利用类型的平均分维值、稳定性指数的大小是土地利用结构的综合反映。

The thesis introduces the wide application and merits of CAD system for two dimension al incisory drawing in furniture enterprises,Making use of two dimension al array,the author offers both an algorithm for the best incisory cutting design giving priority to the larger surface proportion and the source code of VB for the realization of algorithm.

本文介绍了平面切割图的计算机辅助设计系统在家具制造业中的广泛用途和优点，给出了利用二维数组实现大面积优先的最优化切割图设计的算法和实现算法的VB源代码。

The extraordinary activity of taphrogenic differential settlement of late caused great damage and economy loss to urban building, it will greatly jeopard the tunnel engineering recently . Two-dimension limited system theory and simulation modeling to two-dimension limited system theory for Xi'an taphrogenic differential settlement was set up based on real and forecasting data near umpty years.

西安地裂差异沉降近期超常活动，给城市建设造成了严重的经济损失和危害，并对将要建设的地铁工程危害极大，根据近几十年来的实测和预测资料，通过建立二维有限元模型和地裂差异沉降的二维有限元仿真模拟，得出 2 0 0 5年到 2 0 5 0年地裂差异沉降累积值为 84.7m m，水平位移量为 3 6.3 mm。

The changes of the HAF after liver injury may be related to the volume of blood loss, the intraabdominal pressure and the pneumoperitoneum duration.

肝撞击伤伴失血后肝动脉血流量的变化与失血量、气腹压力以及气腹持续时间等有密切联系。

Reneging on our commitments to the world's poor cannot be an austerity measure, she said.

放弃我们给世界上的穷国的承诺不能成为一种紧缩措施。