查询词典 sets

The relation between the rough sets and topological space is studied and topological space properties of rough sets on general relation are discussed.

研究了粗糙集和拓扑空间的关系。讨论了一般关系下粗糙集所诱导的拓扑空间的性质。

The products are mainly exported to North America, South America, Europe and SEA etc. We can supply the complete sets of fasteners with the standard of UIC and AREMA. The complete sets of fastener include rail clips, rail pad, rail spikes, track bolts, rubber pad, insulators, shoulders, dowels and rail clamps.

中博铁路产品主要出口北美、南美、欧洲与东南亚等世界各地，可以提供UIC以及AREMA整套铁路扣件所包含的弹条、扣板、铁路道钉、铁路螺栓、绝缘垫板、轨距块、预埋座、预埋套管、铁垫板全部产品的厂家。

Age Group Level – Sets of 25s, increasing the number of kicks underwater on each 25; holding the determined number of kicks underwater off each wall in training sets.

低龄运动员水平——25米池训练，尝试着在每次的25米潜游中增加踢腿的次数，在之后的训练中尽量保持最多次数的踢腿。

Since any frequent itemset is a subset of a maximal frequent itemset (an itemset is maximal frequent if it has no superset that is frequent), this paper proposes the DMFI (Discovery of Maximal Frequent Itemsets) algorithm for mining all the maximal frequent itemsets from data sets. This algorithm searches the maximal frequent itemsets in data sets from both bottom-up and top-down directions in the meantime. This paper proposes an algorithm that evaluates the boundaries on the support and confidence of uncalculated itemsets by exploiting the information provided by the calculated itemsets.

本文在经典关联规则的基础上，提出了一系列扩展的关联规则开采算法：发现关联规则的难度体现在发现频繁项目集上，事实上最大频繁项目集（其所有的超集都为非频繁项目集的频繁项目集）的集合已经包含了所有的频繁项目集，本文提出一种发现最大频繁项目集的算法DMFI(Discovery Maximal Frequent Itemsets)，该算法采用自底向上和自顶向下相结合的搜索策略对数据空间进行有效的搜索。

One straight line guide and silk pole flat network of transmission gush out black to make network device, by the shower nozzle (2), shower nozzle shelf (1), air cylinder (7), straight line guide (8),(6) of bases, and ball silk (10) of poles and not urge at (4) of mesas job, its characterisitic is that: The stated shower nozzle shelf (1) one both ends and locate a base (11) bottom air cylinder of shower nozzle in the guide (8) connecting rod slipping of the straight line from head to foot through one, make up and lift the organization pneumatically; And this shower nozzle sets of (11) base underpart set up one group along base (6) longitudinal straight line guide (5) package that arrange again, two straight line guide packages (5)Middle shower nozzle sets of (11) base of position department set up, link with this shower nozzle of a base (11)s, and can promote their longitudinal time move the ball silk pole worked up along (6) base; The end head of this ball silk pole (10) is connecting the electrical machinery (9) of urging.

一种直线导轨和丝杆传动的平网喷墨制网装置，由喷头(2)、喷头架(1)、气缸(7)、直线导轨(8)、基座(6)、工作台面(4)及滚珠丝杆(10)和驱动电机(9)组成，其特征在于：所述喷头架(1)的两端通过一能在直线导轨(8)内上下滑动的连杆与设于喷头架底座(11)下部的气缸(7)相连，组成气动抬升机构；而该喷头架底座(11)下部又设置着一组沿基座(6)纵向排布的直线导轨组件(5)，两直线导轨组件(5)中间部位的喷头架底座(11)部设置着与该喷头架底座(11)相连、并能推动其沿基座(6)纵向来回位移动的滚珠丝杆(10)；该滚珠丝杆(10)的端头连接着驱动电机(9)。

One straight line guide and silk pole flat network of transmission gush out black to make network device, by shower nozzle, shower nozzle shelf, air cylinder, person who lead sharply, base, job mesa and electrical machinery, pole of silk and pole of silk make up, its characterisitic is that: Both ends, with locating an air cylinder of bottom base of shower nozzle to be linked to through a connecting rod of the stated shower nozzle shelf, make up and lift the organization pneumatically; And this shower nozzle sets of base underpart set up first group along the longitudinal straight line guide package that arranged of the base again, two straight line guide package shower nozzle sets of base department of position set up and link with this shower nozzle of a bases, and can promote its ball silk pole moved along longitudinal time of the base; The end head of this ball silk pole is connecting the electrical machinery of urging.

一种直线导轨和丝杆传动的平网喷墨制网装置，由喷头、喷头架、气缸、直线导机、基座、工作台面及丝杆和丝杆电机组成，其特征在于：所述喷头架的两端通过一连杆与设于喷头架底座下部的气缸相连，组成气动抬升机构；而该喷头架底座下部又设置着一组沿基座纵向排布的直线导轨组件，两直线导轨组件中间部位的喷头架底座部设置与该喷头架底座相连，并能推动其沿基座纵向来回移动的滚珠丝杆；该滚珠丝杆的端头连接着驱动电机。

In chapter 2. to two classes of specific systems in engineering, we make researches into stability with respect to their own invariant sets through the theoretic techniques of HDS. And then we bring forward sufficient conditions of uniform asymptotic stability and exponential stability with respect to their own invariant sets in the sense of Lyapunov.

第二章针对实际工程之中的两类具体系统用混合动态系统的理论方法对其关于不变集的稳定性进行了研究，提出了它们关于各自的不变集在Lyapunov意义下一致渐近稳定、指数稳定的充分条件。

Let Ω be a collection of its subsets such that:(1) the union of any collection of sets that are elements of belongs to Ω;(2) the intersection of any finite collection of sets that are elements of belongs to Ω;(3) the empty set and the whole X belong to Ω.

和尤承业老师那本书的定义相比，除了一个是英文一个是中文之外没有任何区别。

We have facilities of 1 sets AI Machine and 11 sets SMT Machine and unleaded crest welder.

我们有一条全自动生产线和11台贴片机和无铅波峰焊机。

In a study of nineteen sets of twins who had been separated from birth, investigators found that in approximately two thirds of the sets there were no more significant differences than existed among unseparated pairs of twins.

在对从一出生就分离的19对双胞胎的研究中，研究者发现，其中约三分之二的双胞胎之间的差异与一起长大的双胞胎之间的差异一样不明显。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。