等价的

It's really the natural setting for algebraic topology because the traditional algebraic invariants (fundamental group, homolog group,etc.) arc isomorphic not only for homeomorphic spaces but for spaces of the same homotopy type. Homtopy epimorphisms and monomorphisms are special morphisms in the category of topological spaces and the initial research of them may be traceable to S.T.

同伦论的本质是利用比同胚关系更广泛的等价关系—同伦关系来对拓扑空间进行研究，这也是代数拓扑研究中一种自然的考虑，因为传统的代数不变量不仅在同胚的空间之间保持同构，而且在具有相同伦型的空间之间也保持同构。

Forecasting crack and it's distribution mode is almost equivalent to forecasting oil and gas, so it is important to correctly understand underground crack in exploratory development.

可以说对裂缝及其分布规律的预测几乎等价于对油气的预测，所以对地下裂缝的正确认识对油气的勘探开发具有重要的意义。

In this part, we mainly mention the history and some applications of generalized inverses, development and generality of singular value decomposition, list the main results and the innovation of this paper.

本文通过分别构造特殊的非奇异矩阵，得到了{1，3}-和{1，4}-逆的反序律，系统地解决了加边矩阵M=的广义逆问题，并给出了分块矩阵关于广义逆块独立的等价性条件。

In chapter II,an extended strongly equivalent theorem forgerms with parameters is proved.The theorem is useful to constructthe factoring map between any unfoldings and universal unfolding.

在第二章中，对带有参数的核证明了一个推广的强等价性定理，这个定理在构造任意开折和普适开折因式相通的变换中有一定的应用。

S toys and toasters, but software development is much more complex, therefore assuming equivalence of output is a convenient theoretical abstraction that has very little relevance in practice.

的玩具和烤面包炉，但软件开发的复杂得多，因此，假设输出等价是一个方便的理论抽象，已很少在实践中的相关性。

Deletion of attribute references, subscriptions and slicings is passed to the primary object involved; deletion of a slicing is in general equivalent to assignment of an empty slice of the right type (but even this is determined by the sliced object).

对属性引用、下标和片断的删除会作用到相关的基元对象。对片断的删除一般等价于对该片断赋予相应类型的空片断。

Based on the macroscopic response of quasi-brittle materials, the improved parallel bar system model which considers the equivalent relationship between effective stress and nominal stress of damage materials has been established.

修正平行杆模型是基于准脆性材料单轴受拉破坏的宏观表现，考虑损伤材料名义应力和有效应力之间的等价关系，建立的考虑均匀损伤的物理模型。

A great number of viruses' capsid proteins are efficient assembly into icosahedral symmetry structures. The capsid structures obey the quasi-equivalence theory of Caspar-Klug, and they are directly composed of pentagons and hexagons.

摘 要 绝大多数病毒的衣壳蛋白装配成二十面体对称的结构，其衣壳结构遵从 Caspar-Klug 的准等价原理，即是由五边形和六边形直接拼接而成的几何构型。

The optical potential of a nucleon in the nuclear medium is identified with the nucleon self-energy.

核子的光学势等价于核子在核介质中的自能，论文中RMOP的实部用G=V+AG在DBHF方法下计算得到，虚部则采用二级G矩阵极化图的虚部。

However, even when synonyms are created, the fact that these different URIrefs are used in the commonly-accessible "Web space" provides the opportunity both to identify equivalences among these different references, and to migrate toward the use of common references.

然而，即使同义词被建立了，在普遍可访问的&Web 空间&中使用不同的URIref，即提供了在这些URIref中识别等价关系的机遇，也提供了转向使用通用词汇表的机遇。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。