底空间

本文研究双映射柱的畴数与两底空间的畴数的关系。

In this paper , we study the relationship between the category of double mapping cyclinder and tile categories of two base space .

本文就将系统的底空间作一些改进，不要求底空间是紧的，则可以将紧空间上动力系统即有限符号动力系统改进为广义符号动力系统，主要是可数个符号的动力系统。

In this paper , base space of dynamic system is improved , requiring base space is non-compact , so as to change compact symbol dynamical system or finite dynamical system to generalized symbol dynamical system , which mainly about countable symbol dynamical system .

考察了底空间为∑n×s1的疯狂动力系统的拓扑熵，确定其范围为lgn～2lgn；

The topological entropy of a crazy dynamic system with Σ _N × S ~ 1 as the basic space is investigated , and its range is pointed out : lg N ~ 2lg N.

本文证明了当底空间维数d≥3时，一类带移民超布朗运动占位时过程的中偏差，其移民由Lebesgue测度控制。

Moderate deviation principles ( MDPs ) are proved for the occupation time process of a super Brownian motion with immigration , where the immigration is governed by the Lebesgue measure .

本文研究了底空间为实射影空间时上协边类纤维丛表示的若干性质。

In this paper we deal with some properties of cobordism classes of fiber bundles over the real projective space .

现在，印度太空研究组织发现了靠近月球赤道有一个“巨大的地底空间”，在俄刻阿诺斯Procellarum区域。

Now , the Indian SpaceResearch Organization has discovered a " giant underground chamber " near the Moon 's equator , in the OceanusProcellarumarea .

雕塑与规划个案浅析&成都人民路立交桥底空间规划设计

Superficial Discus-sion of Sculpture and Individual Plan-ning Case & Space Planning and Design of the Under Part of the Bridge of Renmin Rd. , of Chengdu

众所周知，在欧氏空间或更一般的齐型空间上的调和分析中，底空间上的测度满足双倍条件是一个关键的假设条件。

It is well known that the doubling condition on the underlying measure is a key assumption in the harmonic analysis on Euclidean space or more general spaces of homogeneous type .

如何从纤维丛的底空间和纤维型的黎曼度量构造丛空间的黎曼度量，接着，定理1和定理2分别给出了向量丛和主丛关于这种度量的线素。

A new definition concerning the Riemannian metric of bundle spaces is given by using of the Riemannian metric of related base spaces and fibers . Theorem 1 and theorem 2 give the line elements of the metric for the vector bundles and for the principal bundles , respectively .

该公司创建者和首席执行官埃隆·玛斯克（ElonMusk）说，美国航天局一直在催促他的公司完成太空舱的测试，使它能在今年底前往空间站，承担再补给任务。

Company founder and CEO Elon Musk says the space agency has been pressing it to complete testing of the capsule , so it can go to the space station on a resupply mission at the end of this year .

底混响空间相关函数方法估计载体姿态

Method for vessel attitude estimation by spatial correlation function for bottom reverberation

本文利用相关检测技术，并对测试管结构作了改进，很好地抑制了热电子本底及空间电荷效应，构成一种测量热阴极在工作温度下次级电子发射性能的新方法。

By using correlation-detection technique and improving the structure of test tube , the background noise of thermionic-electrons and space charge effect are restrained .

在海底是起伏不大的非均匀薄层的假设条件下，建立了底混响空间相关函数模型。

Under the assumption that the sea bottom is an almost-flat and randomly rough thin layer , a spatial correlation model for bottom reverberation was constructed .

利用柱侧面对空间某点所张立体角的积分可转化为柱底面对空间某点所张立体角积分的结果，将电测井积分方程离散化。

The conclusion that integration of solid angle for lateral surface of a cylinder can be turned into integration for bottom surface is applied to change the integral equation into discrete equation .

深深地徘徊在表达生活和表达自我之间，在画面构图的图与底和空间多少上艰难地抉择着，在画面色彩的选用和对比与调和上一遍遍的推敲着。

Deeply hovered between life and an expression of self expression , the picture composition diagram and the bottom and how much space on the hard choices , in the picture color contrast and scheme selection and time again or .

结合一维随机生长模型，并通过概率统计的方法，得到了模型中水分子在底表面和空间成核概率的表达式：通过对成核概率参数的控制，得到了霜层生长的模拟模型。

By controlling the parameter of the probability , a model of simulation of the frost formation by computer was set up .

白色为底会给空间的装饰留有很多余地，保持格局、大家具不变的情况下。

White wills stay a lot of leeways for the set off of air space for bottom and keep structure and form and everyone to have a permanent condition down .

据悉，该打印机可打印的太空零部件尺寸超过NASA上月底运至国际空间站的3D打印机。

The printer can produce bigger space parts than the one sent to the International Space Station by NASA late last month .

4Hydrilla底床的u空间变化不如Myriophyllum的明显，在密度一定的情况下，z0主要是随着流量的增加而减小，不随测量位置（A、B、C）而变化。

The spatial variation pattern of u for Hydrilla is not as apparent as for Myriophyllum , z 0 mostly decreases with increasing flow range at each density , and not with the measurement position ( A , B , C ) .

扩底桩承载力空间屈服包络面的基本特性

Three dimensional failure envelope behavior of pedestal piles

计算中对底框结构采用空间杆系模型，对隔震装置采用双线性弹簧模拟。

Beam-column elements modal and bilinear spring is used to describe the mechanic character of bottom frame structure .

第三章主要是针对福田繁雄招贴设计作品最主要的三种表现形式异质同构、图底关系、矛盾空间进行分析研究。

The third chapter is Shigeo Fukuda Poster Design for the work of the three most important manifestations of " heterogeneity with structure ," " figure-ground relations ,"" contradictory space " was analyzed .

他善于运用异质同构、图底关系、矛盾空间等视错觉原理，用最单纯简洁的点线面形式和诙谐幽默的内涵，创造出富有哲理性和创新性思维的视觉世界。

He was good with the use of heterogeneous structure , figure-ground relationships , conflict theory of space and other visual illusions , the most simple form of simple points , lines and surfaces , and the connotation of humor , rich with philosophical and creative thinking , visual world .

室内实验分析表明，当前条件下利用颗粒分析获取北塘水库库底地层渗透系数是可行的；在不同的插值方法中，克里金法能较客观地显示库底地层渗透系数空间分布的趋势。

The laboratory analysis shows that it 's feasible to use grain size analysis test to determine K of the reservoir bottom stratum and the Kriging method is the most impersonal way to show the contour of K.