stretch是什么意思

网络释义

用法例句

It follows from one of these characterizations that the pseudo open and compact image of a countably paracompact space is a countably metacompact space.

利用半开复盖、定向开复盖、单调递增开复盖、点态W 加细和垫状加细等刻画了可数亚紧性 。

Japanese mathematician Nobuyuki Kemoto proved that the product of two ordinals is hereditarily countably metacompact in 1996.

日本数学家NobuyukiKemoto在 1996年论证了两个序数的乘积是遗传可数亚紧空间 。

With inclusion degree to distinguish the covering strata,it establishes the property of Lindelf and countable compactness in fts,and discusses their primary properties.

用包含度区分覆盖层次，在不分明拓扑（ｆｔｓ）中建立Ｌｉｎｄｅｌｆ和可数紧性，并讨论其主要性质。

The present article proves the following results:(1) if X=∏α∈ΛXα is |Λ|-para-closed spaces,then X is meso para-compact if and only if F∈[Λ]<ω,∏α∈FXαis countably paracompact;(2) if X=∏i∈ωXi is countably paracompact,then the following three conditions is equal in value;X is meso compact;F∈[Λ]<ω,∏α∈FXαis meso compact;n∈ω,∏i<nXi is meso compact.

主要证明了如下结果:(1)如果X=∏α∈ΛXα是|Λ|-仿紧空间,则X是meso紧的当且仅当F∈[Λ]<ω,∏α∈FXα是meso紧的;(2)如果X=∏i∈ωXi是可数仿紧的,则下列三条件等价:X是meso紧的;F∈[Λ]<ω,∏α∈FXα是meso紧的;n∈ω,∏i≤n Xi是meso紧的。

If each Xα is a normal countably paracompact space,then X is a countably paracompact space.

得到了如下结果:设X是逆系统{Xα,παβ,Λ}的逆极限,|Λ|=λ,假设每个映射πα∶X→Xα是开的且到上的,X是λ-仿紧,每个Xα是正规可数仿紧的,则X是正规可数仿紧的。

WEAKLY COUNTABLE COMPACT REGULARITY OF INDUCTIVE LIMITS OF WEBBED SPACES

网状空间诱导极限的弱可数紧正则性

Studies on the Properties of Local-strongly Paracompact Space and Base-countably Paracompact Space;

局部强仿紧、基—可数仿紧空间的性质研究

Properties and Characterization of Countably Mesocompact Spaces and Locally Mesocompact Spaces;

可数meso紧空间、局部meso紧空间的性质与刻画

Tychonoff Products of σ-ortho Compact Space and Characterizations of Base-Countably Paracompact Space;

σ-ortho紧空间的乘积和基可数仿紧空间的刻画

κ-Paracompactness of Product of Uncountable GO-spaces

不可数多个GO-空间乘积的κ-仿紧性

Maximal and Minimal Value Principle of Differentiable Functions on Noncompact Complete Riemannian Manifold

非紧完备黎曼流形上可微函数的极值原理

The pneumatic system is used for tightening steel belt, easy for adjusting.

钢带张紧为气动张紧，包证张紧力可调。

To reduce the amount or availability of(currency or credit, effecting a decline in prices.

紧缩减少（通货或信贷）的数额或可获得性，导致价格下降

I won't ever teach again myself, but if you do, be sure to mark the women students a little more strictly.This way you may find yourself contributing to the making of many a happy marriage."

我不会再教书了，你假如教书，对女学生的分数批得紧一点，这可以促成无数好事，造福无量。”

In this paper, we give a new algorithm of construction compactly supported trivariate orthogonal scaling function with dilation matrix 21, at the same time, the correspond wavelets are also given.

本文给出构造紧支撑三元不可分正交尺度函数和正交小波函数的新算法。

The number5follows the number4.

数字五紧接在四的后面。

dense interchangeable ROM

紧凑可换只读存储器

maneton clamp bolt

可拆卸曲柄颊夹紧螺栓

The emergency requires that it should be done.

事情紧急，非这样做不可。

but felt extremely nervous in swimming class.

可上游泳课却极度紧张。

There is squeeze possibility in heart.

红桃套有紧逼的可能性。

It's a minor work permit.

这个施工许可无关紧要。

Can you please check it urgently?

是否可麻烦紧急查询?