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precedence constrains
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  “precedence constrains”译为未确定词的双语例句
     (2)Precedence constrains are as follows: There are only one chain T with n jobs in it and m isolated jobs (i.e. there are no precedence constraints among the m jobs), where m is an arbitray number.
     (2)优先约束是:包含有n个工件的一条链,另外有m个孤立点工件(即工件之间无任何优先约束)。
短句来源
     (3)Precedence constrains are as follows: There are m chains with Ui jobs in each chain, where 1 < i < m, and each chain satisfies agreeble.
     (3)优先约束为:有m条链T_1,…T_m,令|T_i|=n_i,1≤i≤m,并且每条链是满足一致的。
短句来源
     Then, the assembly sequence planning was converted into searching a special optimal H-circle in CAG. A branch-and-bound algorithm was presented to find an optimal assembly sequence that satisfied the precedence constrains and assembly feasibility.
     将装配序列规划描述为在复合装配图中求解特殊的最优H回路,并且基于分支定界法给出了满足优先关系、装配可行性、装配代价优化的装配顺序规划算法。
短句来源
     The authors consider the problem of scheduling jobs with unit-time under precedence constrains on m identical machines so as to minimize the total completion times, which has always been open before.
     考虑有优先约束的单位工件在m台同型机上的排序问题 ,目标函数是使工件的完工时间之和最少 ,当机器的台数不确定时这个问题已经得到了解决 .
短句来源
     This paper focuses on scheduling unit length multiprocessor tasks with de-creasing chain precedence constrains on three identical processors so as to minimize makespan.
     研究三个并行处理器环境中,具有递减链约束的多处理器任务的调度问题,调度目标是最小化总处理时间,假设单项任务需单位处理时间.
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     Thinking on Rights' Precedence
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短句来源
     (3)Precedence constrains are as follows: There are m chains with Ui jobs in each chain, where 1 < i < m, and each chain satisfies agreeble.
     (3)优先约束为:有m条链T_1,…T_m,令|T_i|=n_i,1≤i≤m,并且每条链是满足一致的。
短句来源
     On the Legislative Constrains on Administrative Directives
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短句来源
     THE CONSTRAINS OF THE URBANIZATION PROCESS IN CHINA
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A special kind of scheduling problem, the precedence constrained crane scheduling problem, is introduced and shewn NP-complete.

本文提出了计算机辅助制造(CAM)中的一类作业调度问题并证明了它的NP完全性。

In this paper, we deal with some open problems for one-machine generalized precedence constrained scheduling problems mentioned in Wikum et al[4]. We prove that the k-2-chains problem with upper bound delays is NP-complete in the strong sense, and propose a pseudo-polynomial algorithm for the k-(2, 1,…, 1)-chains problem with lower/upper bound delays respectively.

在本文中,我们针对Wikum等人在文[4]中提出的单台机器多链时间 约束问题的若干个公开问题给出了一些新的结果.我们证明了带有延迟时间上界的 k-2-链形结构的排序问题是NP-困难的,并分别对带有延迟时间上界/下界的 k-(2,1,…,1)-链形结构问题给出了一个拟多项式时间算法.

Making a survey of methods of assembly sequence planning which many scholars have studied, a new method of assembly sequence planning for many varieties of products in a small scale of batch process is proposed, to improve roboticized level. Identifying subassembly of obvious features in advance, the liaison fig of product is decomposed by cut-set. In the basis of geometrical precedence constraints established auto-maticaly, technological precedence constrains are established with man-computer alternating....

Making a survey of methods of assembly sequence planning which many scholars have studied, a new method of assembly sequence planning for many varieties of products in a small scale of batch process is proposed, to improve roboticized level. Identifying subassembly of obvious features in advance, the liaison fig of product is decomposed by cut-set. In the basis of geometrical precedence constraints established auto-maticaly, technological precedence constrains are established with man-computer alternating. Then a flow chart of identifying subassembly and a flow chart of assembly sequences planning are given.

在分析总结以往学者对装配顺序规划研究的基础上,针对多品种小批量产品装配的生产实践活动,为提高装配顺序分析的自动化水平,提出了一种基于人机交互的装配顺序规划方法.该方法在子装配或组件预识别的基础上,采用割集法将产品进行拆分,在零件几何优先关系建立的基础上,基于人机交互建立产品工艺优先关系.本文给出了子装配自动识别的程序框图及装配顺序生成的程序框图.

 
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