查询词典 manifold

From Poisson matrix, we can observe volume-preserving vector fields. By using Geiges-Gonzalo's existence of contact circle Theorem [3] , we show the existence of volume-preserving circle on3-manifolds which says that every3-manifold admits two linear independent vector fields preserving a same volume form.

通过Poisson矩阵可以观察出保积向量场，再利用Geiges-Gonzalo的接触圆存在性定理[3]，我们证明了保积圆的存在性：每个闭的3-流形上都存在两个处处线性无关的保积向量场并且它们的常系数线性组合仍是保积向量场。

The value manifold and accumulation of meaning fragment of later modernism, is a austere challenge for Shang Yang who has the ideal of classicalism culture.

后现代主义的价值多元与意义碎片的堆积，对于具有古典主义人文理想的尚扬来说，本身就是一个严峻的挑战。

Also we discuss the existence of infinite closed complete geodesic in a nocompact Riemannian manifold with nonnegative curvature.

利用核心的思想，我们还探讨了无穷多闭测地线等几何结构问题。

Only the manifold is still closed.

仅出口阀仍然是关的。

Everything is ready except the manifold closed.

除了出口阀没开其它一切就绪。

Letφ:(Z_2)~k×M~n→M~n denote a smooth action of the group(Z_2)~k={T_1,…,T_k|T_i~2=1,T_iT_j=T_jT_i} on a closed n-dimensional manifold M~n.

设φ：(Z_2)~k×M~n→M~n是群(Z_2)~k={T_1，…，T_k|T_i~2=1，T_iT_j=T_jT_i}在n维光滑闭流形M~n上的作用，群(Z_2)~k由k个可换对合生成。

Then the author analyses the actuality of entironment conservation of the Lantsang-Mekong Sub-region and we have liabilities to conserve it because it is not only abundant in natural resources, manifold wild propagation, but also the marsh supplies important life source for coastwise and ambient residents.

接着分析了澜沧江——湄公河次区域生态环境保护的现状和对其保护的必要性，因为该次区域内不仅自然资源丰富，野生动植物种类多样，而且这一湿地生态系统为沿岸及周边地区的居民生活提供了重要的保障，是该次区域经济发展的支柱。

This paper provides a principle optimizing the coat hanger die with the tear shape manifold and a method simulating the distribution of pressure in the die cave.

阐述了泪滴型歧管衣架机头流道优化计算原理和压力分布模拟计算的方法，编制了CAE软件包。

Local codimension two bifurcation of maps,associated with Hopf-pitchfork case,is analyzed using the center manifold theorem and normal form method of maps.

应用映射的中心流形和范式方法，研究了映射在Hopf-pitchfork余维二分岔点附近的参数开折，揭示了含间隙振动系统在余维二分岔点附近的动力学行为。

By returning to the moment when the scandal of empire became acceptable we gain a new understanding of the modern culture of the colonizer and the colonized and the manifold implications for Britain, India, and the world.

通过返回的时刻帝国的丑闻成为接受我们获得了对现代文化和殖民者的殖民和Br的多方面影响的新认识

And discuss some key point of integrated management system design, include hazard identification and risk assessment and risk control in the occupational health and safety management, the measure of satisfaction target of customer, the flawlessness of law system, the integration of the integrated management system and enterprise standardization system, unify lead institution and work orgnization, integreted internal audit and integrated management review.

同时，论述了一体化管理体系构建中的几个主要问题，包括职业健康安全管理中的危险源辨识、风险评价和风险控制、顾客满意度的科学监测、法律、法规体系的完善、一体化管理体系与企业标准化体系的有机结合、统一的领导机构和工作机构、一体化的内部审核和管理评审。

Deepwater Taranaki is investigated for its petroleum potential, using all available seismic data tied to shallow-water wells.

运用与浅水井相关的现有全部震波探测数据考察了深海区塔拉纳基盆地的油藏前景。