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The phytoplankton community was mainly composed of Cyanophyceae, Euglenophyceae, Bacillariophyceae, and Chlorophyceae, and the dominant species were Oscillatoria subtillissima, Dactylococcopsis irregularis, Euglena caudata, Melosira granulata, Cyclotella meneghiniana, Chlorella vulgaris, and Scenedesmus quadricauda. The main environmental factors affecting the distribution of phytoplankton species in July were ammonium-nitrogen, dissolved oxygen, water temperature, and total phosphorus, while those in September were pH, water temperature, dissolved oxygen, transparency, and total nitrogen. Water transparency and zooplankton were the main factors affecting the biomass of Cryptophyceae, Pyrrophyceae, and Bacillariophyceae; while nitrogen, phosphorous, and dissolved oxygen were the main factors affecting the biomass of Cyanophyceae, Euglenophyceae, and Chlorophyceae.

结果表明：调查期间共鉴定出浮游植物384种，隶属于8门，浮游植物密度范围为2.01×105～57.60×105 cells·L-1；群落组成以蓝藻、裸藻、硅藻和绿藻为主，主要优势种有细微颤藻、无常蓝纤维藻、尾裸藻、颗粒直链藻、梅尼小环藻、普通小球藻、四尾栅藻等；7月影响浮游植物分布的主要环境因子依次为铵态氮、溶解氧、水温和总磷，而9月的pH值、水温、溶解氧、透明度和总氮含量对浮游植物的分布产生影响较大；其中，透明度和浮游动物量是影响隐藻、甲藻和硅藻藻类生物量的主要环境因子，而蓝藻、裸藻、绿藻主要受水体氮磷营养盐浓度和溶解氧的影响。

The four well-known skeleton hydro-power stations of West-East Electricity Transmission Project, named Xiangjiaba, Xiluodu, Baihetan and Wudongde from the lower reaches of Jinshajiang River to upriver reaches, are all distributed in this area. Based on the analysis of the resource exploitation and industry sustainable development status, current problems and future scenarios, the main conclusions go as follows:(1) There are abundant and varied agricultural resources, widely distributed mineral resources with valuable predominant minerals, potential tourism resources, but some main problems such as lower level of exploration and development, serious waste and pollution, restraints of financing and transportation and eco-environmental frangibility still call for immediate solution;(2) Regional economy develops fast but the overall level is low-farming and animal husbandry industries, In which crop-plantation takes the main part, dominates in the sectional structure of economy, and forestry and specialty industries need to be further developed. The existed restraints such as unbalanced structural and regional economic distribution, acute structural deficiency and low economic efficiency need to be cleared out, of the way to a sustainable future.

西电东送骨干工程的向家坝、溪洛渡、白鹤滩、乌东德四大水电站均分布在这一江段通过对该区域资源开发和产业发展的现状、问题和发展前景进行分析，得到如下主要结论：(1)该区域农业资源丰富多样，矿产资源分布广泛且优势矿种地位突出，旅游资源待开发潜力巨大，但是资源开发却面临着勘探开发程度不够、浪费污染严重、资金交通制约和生态环境脆弱等几大问题；(2)区域产业经济发展迅速但总体水平低，部门结构中以种植业为主的农牧业占主导，林牧业和特色产业有待进一步开发，产业发展面临着部类和区域不均衡、结构矛盾突出以及效益低下等问题的困扰。

After take analyzed deeply for the opened magnet circuit with FEMM (Finite Element Method Magnetics) we find out the field distributing that is separated into three sections . One is the main area what we called as positive field section. Beside the main field there are tow areas that are called the inverted field sections. Loudspeaker arise a very serious distortion when the voice coil moving into inverted field areas. The direction of induced current in the coil part of entered inverted field area is same with the current driving into loudspeaker so that total currents increas largely and heat increase rapidly. With more coils moving into inverted area the voice coil will take on negative inductance properties. It is the main reason that voice coil is burned by heating with increasing current due to arise negative inductance. So opened magnetic circuit is not suitable for the woofers in which the voice coil have wider displacement range. When using this kind magnetic circuit design, the voice coil moving range should be less than the range of positive field to avoid loudspeaker arise serious distortion and heating. Even though voice coil moving range is in the positive area, loudspeaker will still arise more distortion because the field distribution is very cliffy at tow sides of the positive area and full range of magnetic field distribution is not parallel that will arise distortion. Base on above reasons, opened magnetic circuit is not an ideal magnetic circuit for low-frequency loudspeakers. But it can be used in mid-range or high-frequency productions.

开式磁路是由2片钕铁硼磁铁和主导磁板和导磁垫片组成，我们在实践过程中发现这种磁路结构不适合于低频扬声器的使用，我们通过使用FEMM（Finite Element Method Magnetics）软件包对该磁路进行了分析，该磁路的磁场范围被分成3个区域，其中在主导磁板附近形成一个正向磁场，在正向磁场的两边存在反向的磁场，音圈在工作时有很大一部分进入了反向磁场中，在反向磁场内线圈的感应电流方向与驱动电流方向相同，使得音圈呈现出负感抗特性，由于音圈的负感抗特性引起电流的增加导致音圈发热甚至烧毁，因此在扬声器中使用开式磁路时，音圈的运动范围应控制在正向磁场范围之内，否则音圈运动到反向磁场区域时将会产生很大的失真和发热，即使在设计时已经将音圈的运动范围控制在正向磁场范围之内，由于正向磁场的2个边缘磁场强度衰减太快，同时开式磁路中磁场的分布不是平行的，而是自由发散的分布，这样肯定会导致扬声器的非线性失真，因此我们得到的结论是：开式磁路并不是一个理想的磁路，它不适合于低频扬声器的使用，但它还可以应用于中高频扬声器。

A 8×2×3 ( 8 subsistence strategies: agricultural, irrigation, fishing, hunting, forest industrial, city industrial, and trading/man and woman/18- 34 years of age, 35-49 years of age, and above 50 years) ANOVA with covariable(the influences of modernization)revealed significant covariable effect and main effect of subsistence strategy, sex and age in the analysis operation, significant covar-effect and main effects of subsistence strategy and age in the connection operation, significant covareffect and main effects of subsistence strategy in cognitive style.

认知测试分数的8×2×3的ANOVA协方差分析表明，在分析操作水平上存在着显著的组间差异、性别差异、年龄差异和协变量的效应；在综合操作上，存在着显著的组间差异、年龄差异和协变量效应；在认知方式上，存在着显著的组间差异和协变量效应。

The development of Chinese herbal medicine is one of main methods for peasants to increase income in the eastern mountain area of Liaoning.The main medicinal plants in Liaoning Province are schisandra,asarum,dioscorea, panax,gentiana,aconitum,fritillaria,lilium,astragalus,saposhnikovia,atractylodes,polygonatum, clematis,dictamnus,etc.The soils of nearly 20 species of the medicinal plant were studied in this paper.The differences among different medicinal plants were analyzed.The species and quantity of fungi,bacteria and antinomycete in soil of medicinal plants were clear.With the pathogen of main diseases of medicinal plants as target,the strains in the control of pathogen were screened from soil of medicinal plants.

在本研究中，首次以辽宁省主栽药用植物：五味子、细辛、穿山龙、移山参、龙胆、黄花乌头、平贝母、百合、黄芪、防风、苍术、玉竹、威灵鲜和白鲜皮等近20种药用植物土壤为研究对象，应用平板稀释法和磷脂脂肪酸测定法对土壤微生物多样性进行研究，通过研究明确了影响土壤微生物多样性的因素；土壤微生物与药用植物关系；以药用植物土壤微生物为供试菌株，药用植物近年来主要病害为靶标菌，进行生防菌株筛选。

Yixing City Chemical Plant was built in the southeast in 1991, the main products Triethanolamine, NP series emulsifier, polyethylene glycol series; Yixingoil additive Limited was founded in 1992, the main products purificant 6501, anti-rust oil Series, 13 # machine oil, cutting fluid such as water;§Yixing railway was built in 1993, the National Ministry of Railways are fixed-point production enterprise, the main products of the three generations of railway locomotive and its combination of oil, the product responsible for the supply in eastern China oil unit of the railway locomotive.

宜兴市东南化工厂建于1991年，主要产品为三乙醇胺， NP乳化剂系列，聚乙二醇系列；宜兴海达特油添加剂有限公司建于1992年，主要产品为6501净化剂，防锈油系列，13＃机械油，水剂切削液等；宜兴市铁路油脂厂建于1993年，是国家铁道部定点生产企业，主要产品为铁路内燃机车三代油及其复合剂，产品负责供应华东地区的各铁路机车用油单位。

When a certain place in a large earthquake, in a period of time, often in a series of earthquakes, one of the largest earthquake known as a main shock, the main shock before the earthquake is pre-earthquake, occurred after the main shock is earthquake aftershock .

当某地发生一个较大的地震时，在一段时间内，往往会发生一系列的地震，其中最大的一个地震叫做主震，主震之前发生的地震叫前震，主震之后发生的地震叫余震。

Yang responsible person from the beginning of the "main wood is cherry,""sell side not on the scene, inspection procedures are not legitimate" to "the main material is not cherry, cherry paste with skin","Paste Paper are also considered the main material,"" certainly not be able to buy 25,000 cherry furniture,"explained a lie Another lie, finally, in the inspection staff and relevant experts before the furniture had to admit this is really not the main wood cherry the very fact that a payment.

杨从&主要负责人木开始是樱桃&，&卖方不在现场，检查程序不合法&的&主要原料是樱花，樱花皮肤贴&，&粘贴纸也被视为主要材料&，&一定不能购买25，000樱桃家具，解释说：&一个谎言另一个谎言，最后，在检查前，工作人员和有关专家的家具不得不承认这并不是主要的木材樱桃非常事实付款。

Main points of the thesis are as follows:(1) The main function models and information relations between these models in the CAPP system in the integrated CAD/CAM project are explained, a new process plan design method is mentioned based on analyses of process plan design. This method is based on the process plan prototype, and develops the prototype little by little until the perfect process plan is completed, the prospect of this method is discussed;(2) The feature abstracting rules and methods are studied, a feature coding system is developed based on GT, all the defined feature models are described by the mathematical methods;(3) The integrated method of CAD/CAPP based on features is mentioned, this method defines a feature exchanging model, and develops an interface software to exchange design data into technology data base, this technology data base includes the design and technology information of the parts;(4) The process plan reasoning method based on features is created, this method uses Mycin algorithm to solve the reasoning of the feature process plan. A process plan making system is developed. In this system part process plan is made by the semi-intelligent method, this method uses the feature reasoning, feature process chain searching and man-computer talking together;(5) The main structure of the HOPE system is introduced, a shaft drawing and its process plan made by this system are shown, the data process problem in process drawing making is also discussed;(6) A new method of describing process rule is introduced, this method uses IfThen rules and neural nets weight values together to describe process rules, the BP algorithm is adopted in this method;(7) The optimal machining sequence problem of the process steps on the same fixturing is discussed, optimal algorithms SA is applied to solve this problem, the result shows that this method is more efficient than the traditional method;(8) All jobs in the thesis are summarized. In order to carry out the research in the future, some rational proposals are given.

全文论述的内容主要有下列几个方面：(1)较为系统地阐述了CAD／CAM一体化工程项目中CAPP系统的主要功能模块及其信息流程，在分析工艺设计过程的基础上，提出了基于特征原型的渐进式工艺设计方法，并探讨了该方法的应用前景；(2)研究了零件特征提取的原则和方法，在成组技术的基础上，开发了一套基于特征的分类编码系统，并在提取零件特征的基础上，定义了零件特征的数据模型，开发了基于轴类零件特征的参数化设计系统；(3)研究了基于特征的CAD／CAPP集成的方法，通过定义零件特征数据模型的存储结构，开发了将设计数据转换到工艺数据库中的接口程序，为后续的CAPP系统提供必要的零件形状和工艺信息；(4)研究了基于特征的工艺推理方法，将Mycin算法应用到工艺决策中，开发了基于特征的工艺推理及工艺方案生成系统，在系统中综合运用特征推理、特征加工工艺链查询及人机对话相结合的半智能化方法确定零件加工工艺；(5)介绍了整个HOPE系统的总体结构，通过运行HOPE系统绘出了一轴类零件的零件图，并生成了该零件的加工工艺方案，初步探讨了基于特征的工序图生成技术中数据处理问题；(6)研究了工艺设计过程中知识如何有效表示的问题，提出了将显式的IF-THEN规则表示与隐式神经网络权值表示相结合的工艺知识表示方法，并利用BP算法进行了工艺知识表示的初步研究；(7)研究了工艺设计过程中同一安装下工步优化排序问题，利用神经网络中基于模拟退火的理论来解决该工步优化排序问题，实践证明该方法较传统的算法具有更高的效率；(8)总结了本文所进行的研究工作，为今后进一步开展工作提出了较为合理的建议。

As the bearing in engine is working in condition of high temperature and high pressure, to find out the performance of the main bearing of I.C. Engine in Western China more accurately, a model of the main bearing was built by considering it as a bearing with TEHL (Thermo Elastic Hydrodynamics Lubrication). The influent of low environment pressure on main bearing was studied with thermo and elastic hydrodynamics considered.

由于发动机轴承是在高温高压条件下工作，为了更加细致和准确地研究发动机主轴承工作的性能，本文还建立了考虑低气压影响的发动机主轴承的热弹性流体润滑模型，分析了考虑弹流和热的情况下，低气压对发动机主轴承的工作性能的影响。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷