不可更新资源

将时间看作一种不可更新资源，并将时间资源分为私有资源、公有资源和双重资源三类；

Secondly , time was regarded as a kind of non-renewable resources , and was classified into three types : private , public and mixed .

结果表明，织金县的优势是不可更新资源，而经济系统以低质能为主，经济系统对生态系统施加的负担过重。

The findings showed that the dominance of Zhijin was non-renewable resources , while energy in common was the leading part of economic system , and ecological system bore more and more weight of economic system .

因为MRCPSP允许工作有多种执行模式并引入了不可更新资源约束，因此求解算法要比SRCPSP复杂得多。

Because activities can be executed in one out of several mode and there are nonrenewable resource constraints in the MRCPSP , the optimization algorithms are more complex than the SRCPSP 's.

因此，在人类生存时间内，土壤资源是一种不可更新资源。

So , soils are a non-renewable resource on a human time scale .

将它们分成两类：可更新和不可更新资源

Classify them as renewable and nonrenewable resources

将产品开发项目中的成本分为可更新资源成本和不可更新资源成本。

The project cost in product development project is divided into renewable resource cost and the nonrenewable resource cost .

经济发展的主要驱动力首先是当地的不可更新资源，其次是从外地输入的资源与产品，再次是当地的可更新资源；

The primary driving forces of the system is local non - renewable resources , the other includes the resources and products from outside region and local renewable resources ;

计算实验的结果表明其对于不可更新资源约束强度不太小的项目，可以在合理的计算时间内得到令人满意的结果。

The results of computational experiment indicated that the presented solution procedure in this dissertation will obtain satisfied solution in reasonable time for the project with greater non-renewable resource strength .

虽然全球变暖这一长期的问题确实很严重，但考虑到诸如环境的迅速恶化和不可更新资源的普遍滥用等当前的问题，它的重要性就有所降低了。

While the long-term problem of global warming is indeed serious , its significance diminishes somewhat when considering immediate problems such as rapid environmental deterioration and the rampant misuse and abuse of nonrenewable resources .

结果表明：武川县种植业系统不可更新资源能值投入和化肥投入能值占总能值投入的84.2%，属于典型的资源消耗型种植系统。

The results make it clear that the emergy input of nonrenewable resources and chemical fertilizers accounts for 84.2 % of the total emergy input in the farming system of Wuchuan county and thus the farming system belongs to a typical emergy-consuming farming system .

随后，根据资源约束类型的不同，对可更新、不可更新及双重资源约束Max-npv项目进度问题的研究成果，特别是优化算法和启发式算法的设计进行了概述；

Then according to the type of resource constraints , the fruits of the researches on renewable , nonrenewable , and doubly constrained resource-constrained max-npv problems , especially the design of optimal and heuristic algorithms , are discussed respectively .

模型考虑了型号项目中活动重叠、活动迭代、活动执行时间的不确定性和可更新资源总量等重要的工期风险影响因素。

Some essential risk factors of the project duration such as activity overlapping , activity iterations , uncertain activity durations and non-consumable resource amount are integrated into the decision model .

系统环境负荷率不高，不可更新环境资源破坏严重，应提高可更新环境资源利用效率、加强水土保持工作；

The environment loading rate is not high as a whole , and the unrenewable environmental resources are badly destroyed , so attentions should be paid to increasing utilization efficiency of renewable environmental resources and conserving water and soil ;

因此必须重视不同类型资源的利用比率，对于来自系统之外的不可更新反馈能值的利用要采取节约和保护的方法，同时要降低对系统内不可更新资源的利用比率。

To take advantage of the non-renewable feedback emergy from outside , the system should use conservation and protection methods . At the same time , non-renewable resource use rate of the system should be reduced .