污染地

G. , flooding fields, increased use of nitrogenous fertilizer, and the use of high yielding varieties .

此外，化学药剂的使用不可避免地对自然环境造成污染和破坏。

These one-sidedly values inevitably result in the pollution of environment, the worse ecology and resources shortage.

这种对商品物质片面追求的价值观，不可避免地导致环境污染、生态恶化和资源短缺。

By iteratively combining these two procedures we achieve a way of training the configuration of RBFNN. In addition, the algorithm is very robust with respect to the noise level. Simulation experiments show that the proposed algorithms are sound. In chapter 3, which is the extension of chapter 2, the improvements of the architectures of RBFNNs and the solutions of their relating problems are discussed, Firstly, an new distance metric is advanced and a forward orthogonal least square selection procedure is applied to learning the parameters of classification function and selecting the important input nodes.

首先分析了目前存在的同时确定RBFNN结构和参数的方法的缺陷，在此基础上提出了用基于拉马克的进化学说的进化编程算法来改进算法，以克服某些缺陷；然后针对受到严重噪声污染的系统，如何提高RBFNN的泛化能力的问题，利用基于AIC的适应度函数的改进遗传算法学习结构和参数；最后介绍基于MDL原理的方法，将优化网络的结构和参数分为两个阶段：训练和进化，先自适应地改变RBFNN基函数的中心和宽度，同时训练输出线性权值，再用基于MDL原理的适应度函数的标准GA来优化隐层节点，通过交替使用这两过程达到训练RBFNN的结构和参数的目的，该算法具有较强的鲁棒性。

Hairnets and overshoes are provided to minimize contamination.

提供发套及套鞋以最大程度地减小污染。

In spite of its short history, it develops rapidly and is widely used in core correlation, material source identification, sediment tracing, ecosystem evolution, paleocliamtic and paleoenvironmental study, pedology, environmental pollution, oil and gas exploration and paleomagnetism.

尽管其历史不长，它的发展却异常迅速，在样芯对比、物质来源鉴别、泥沙运移示踪、流域生态环境演替、古气候和古环境研究、土壤发生学、环境污染、油气勘探、古地磁学等领域得到了广泛应用。

Firstly, because of more and more pipelinesintersect underground, it becomes very difficult to perambulate. Secondly, the leakageof underground pipeline may cause a series of serious problems, such as loss ofenergy and money, pollution of the environment and even danger to life. The reasonsof leakage mainly include two aspects.

其一，埋地管道不断增加，纵横交错，使管道巡线变得越来越困难；其二，土壤对管道的腐蚀，自然力的破坏等原因而产生的漏油，以及人为的损坏和偷油等，都造成巨大的能源浪费和经济损失，更可能引发环境污染和严重的安全事故。

All enclosed system with exhaust fan minimums the consumption of perc. and prevent the pollution to the air and effect to the human.

环保经济——全封闭系统，最大限度地降低干洗油损耗，减少大气的污染和对人体健康的影响。

According to the invention, the percolator avoid waste and purification effect avoid reduce by the exacting percolator replacing time.

按照本发明方法，由于按照驱动空气净化器时的空气污染程度精确地确定过滤器更换时间，过滤器不浪费，且防止空气净化效果的降低。

It was noted that, if these various separate groups were to serve as an integrated national blood group, they must be tightly controlled because of the multiple risks attending the use of blood, including its perishability; incompatibility; possible errors in grouping, typing, and cross-matching; contamination from unsound techniques; unsatisfactory conditions of storage; and possible transmission of such diseases as malaria, syphilis, and hepatitis.

有人指出，如果这些不同的组织机构能统一成全国性组织机构的话，必须紧密地监控，因为血液的使用存在很多风险。包括：易腐性、不相容性、分型和交叉配型错误、不健全技术产生的污染、恶劣的储存条件，还可能会传播疟疾、梅毒、肝炎等疾病。

On the basis of laboratory and in situ tests,we analyse the depth and perviousness of vadose zone as well as aquifer and aquifuge and, furthermore,point out Penglaizhen formation with poor permeability can effectively prevent pollution of ground water from the leachate of refuse.

结合室内和野外现场试验，详细分析填埋场区的包气带、含水层、相对隔水层的厚度、透水性等水文地质条件，指出被透水性差的蓬莱镇组中段地层所围限的三面环山、中间沟谷的地质环境，能够有效地阻滞垃圾渗滤液对地下水的污染。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。