最下的

Theoretic models and methods using nonnumeric parallel optimization algorithm, genetic algorithm and simulated annealing algorithm, to adjust and control the production-injection system were made with taking the net present value as the objective function and coupling economic model, reservoir model, wellbore model including producer and injector, and choke model.

以净现值为系统目标，耦合经济模型、油藏模型、注采井筒模型和油嘴模型，首次建立利用非数值并行算法——遗传算法与模拟退火算法调控注采系统的理论模型与方法，对不同开发阶段与不同约束条件下的注采系统进行最佳调控，使之保持最优生产状态。

Due to the population pressure and the nonrational economic activities, the fragile karst ecological environment has become worsened, and the land rocky desertification has become one of the most serious ecological environment problems in the karst area, intimidating the survival and development of local residents.

脆弱喀斯特生态环境在人口压力和不合理经济活动作用下日益恶化，土地石漠化已成为喀斯特地区最严重的生态环境问题之一，直接威胁着当地居民的生存与发展。

The teacher asked me to note down the main points of the speech.

老师让我写下这段语音的最重要的部分。

As one of the largest abalone producers in the world, Oceanus will guarantee the huge supplies of fresh abalones for the restaurants.

作为全球最大的鲍鱼生产商之一，欧圣将保证旗下餐厅所需大量鲜活鲍鱼的供应。

Hydroisomerization reactions of n-paraffins with double-function catalysts have been developed as one of the most important clean method to improve the octane number of the gasoline.

将正构烷烃在氢溢流条件下使用双功能催化剂催化为异构反烷烃是提高汽油辛烷值的最重要的绿色方法。

Their key problems are the choice theory of optimal strategy for investment and the pricing theory of assets.

其核心问题是不确定环境下的最优投资策略的选择理论和资产定价理论。

The Concentration of Urban Population and the Criterion of Optimality of a City.

Perevedentsev， V。，〈都市人口集中化与最适都市的标准〉，采自科学学会，国际劳工运动学院之公报，〈科技革新条件下的都市化与劳工阶级〉第212-230页，Moscow， 1970。

In this paper , an efficient optimality criterion method is developed for the mini-mum weight design of WF I-section frames with constraints on stresses, displacements, local buckling and cross-sectional dimensions.

本文利用优化准则法解刚架结构优化设计问题，可以处理工程上常用的宽缘工字梁型剖面结构在应力、位移、板局部稳定性和几何约束条件下的最小重量设计。

This work is now informing further activity, led by KBR and BAE Systems, on the optimum build strategy.

在 KBR 公司与 BAE 系统公司的领导下，根据最适宜的建造方案，这项工作现在已经在深入进行中。

Especially for multifrequence problems, both the order for the approximation of nonlinear functions and the iterative numbers for neural network learning will be decreased by several times.

利用这种新方法可以直接分析、辨识线性系统、双线性系统的稳定性和未知参数，并可直接求取性能指标下的最优控制律。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。