指导

It provides inquiry service for peasants and basic agriculture technician and helps them to make a right decision, just like a well-know agriculturist guide the peasants on the spot.

为农民和基层农技人员提供各种农业问题咨询服务与决策方案，起到高层次农业专家随时都能亲临现场指导农业生产的作用。

According to the guidance of economic fundamental principles, this paper utilizes the systems science, sight-ecology, agrology and many other theories and methods related with water conservancy, adopts the methods of representative research and emphasizes the combination qualitative analysis and quantitative analysis.

在研究中以经济学基本原理为指导，同时借鉴系统科学、景观生态学、土壤学和水利科学相关理论和方法，采取典型调查的方法，并注重了定性分析和定量分析的有机结合。

Under in the circumstances, with taking the economic theory of Marxism as the instruction, and based on a comprehensive analysis of the basic theory of the development of urban agricultural , the article made a thorough inquiry into the present situation and the problems in Shenzhen with the theories of the development economics, the agronomics, the quantitative economics and other disciplines of knowledge, it also focused on the strengths in the process of Shenzhen's development of urban agricultural.

基于此，本文以马克思主义经济理论为指导，运用发展经济学、农业经济学和数量经济学等学科知识，从梳理都市农业发展的基础理论着手，深入剖析深圳市都市农业的发展现状与问题，以及重点探讨深圳市都市农业发展的内外部优势，在总结国内外发达地区都市农业发展的经验基础上，研究深圳市都市农业发展战略，并。。。

Blood stream of deep vein were observe carefully after operation, eraly physical therapy were carried through by nurses aidance to prevent deep vein thrombosis.

总结18例人工髋关节置换术后的护理经验，术前采取针对性的预防措施，术后密切观察患肢深静脉血流情况，并指导协助患者进行早期功能锻炼以预防患肢深静脉血栓形成。

The paper mainly regards western economic theory as guidelines, using the basic method that the theory combines with reality, systematically studies the relationship between Agricultural Industrial Organization and System of Agricultural Cooperation, emphatically describes the function of the Innovation of SAC during the optimization to AIO.

论文主要以西方经济学理论为指导，运用理论与实际相结合的基本方法，系统地研究了农业产业组织与农业合作制度的关系，着重论述农业合作制度创新对农业产业组织优化的作用机理。

The computing formulae for oxygen concentration in the BF blast air have been proposed.

本文的这些算式对指导富氧喷煤的高炉冶炼是有一定作用的。

In order to prove the reliability, test studies have been primarily carried out in the indoor soil bin. The data of the vehicle driving state parameters under the same or different terrain are analyzed. The process curves are compared by different control schemes. The theoretical model of the optimum driving state is reliable and fuzzy control scheme is feasible. The disturbances and unknown factors of control system are analyzed. Test results prove that the half-tracked air-cushion vehicle can drive steadily under control of the computer. At the same time the sensors used to measure soil mechanics characteristics on line need to be developed. And it is the important problem to be solved in the future study. The necessary regulation and correction are put up. So the studies in this paper provide some instruction for the further research work.

为了验证本文提出的最佳工作状态及最佳垫压理论，并分析控制系统的可靠性和稳定性，本文在半履带式气垫车的模型车上，在室内土槽中进行了初步的实车性能和理论验证试验，考察了在同种和不同土壤条件下气垫车的行驶状态参数的测量数据，比较了采用不同控制方法下的过程曲线，验证了最佳工作状态的理论模型和模糊控制系统方案的可行性与可靠性，从而保证了采用自整定模糊PID控制器能够使半履带式气垫车在稳定行驶最佳工作状态下；同时通过试验研究，分析了系统中各干扰与未知因素，对控制方案进行了相应的调整和修正，为今后进一步的研究工作提供了一定的指导。

Based on mechanism and vehicle theories theoretical analysis is pursued and normal driving conditions are put forward. The relations are analyzed between load distribution and power consumption. Mechanical formula is proposed. Furthermore in this paper the theoretical model of the total power consumption is established, and the relations of the total minimized power consumption with the air-cushion pressure and the fan revolution are discussed. The optimum operation point is put forward. The dynamic digital simulation studies are carried out on the operating procedure of the half-track air-cushion vehicle on soft terrain. Mechanical parameters and soil mechanics characteristics affecting vehicle power consumption and riding performance are analyzed. At the same time according to the model formula, the automation control problem is discussed. It is a theoretical instruction for further automation control.

本文还从力学和车辆原理的角度进行了理论分析，推导了半履带式气垫车的需求功率及正常行驶条件，研究了气垫压力和功率消耗之间的关系，提出了力学模型公式；建立了半履带式气垫车总功率消耗的理论模型，研究了最小功率消耗时功率与垫压及表征气垫车行驶状态的各参数的关系，分析了相应的影响因素，并提出了最佳工作状态的定义；同时进行了半履带式气垫车在软地面的行驶过程的动态数字仿真试验研究工作，对影响车辆功率消耗和行驶平顺性的各力学参数和土壤参数进行了分析，得到了各运行状态参数的变化规律，验证了最佳工作状态和最佳垫压的理论，根据力学模型公式对进一步的自动控制问题进行了探讨，为系统的控制提供了理论指导。

So in this paper based on the characteristics and the optimum state theory of the vehicle, some kinds of control schemes are compared and discussed, and the fuzzy PID control scheme is adopted at last. The relation between air-cushion pressure and fan rotational speed on the optimum driving state is studied. The cushion pressure is used as controlled variable and the fan revolution is used as regulated variable. And transducer and fan motor are actuators.Based on the structure and operating properties of half-tracked air-cushion vehicle, the control system scheme and structure are presented. A control scheme using the self-tuning PID fuzzy logical controller is adopted. Fuzzy rules are set up and some researches have been done for fuzzy tuning method. At the same time the real-time measurement scheme by computer control is proposed, and electric circuits are designed. In the control system of half-tracked air-cushion vehicle cushion pressure P〓 is used as controlled variable and the fan speed n〓 as regulated variable.

因此本文以半履带式气垫车的特性和最佳工作状态理论为指导，通过对各种控制方法的比较与探讨，提出采用模糊PID控制方案，并且研究了在最佳工作状态下垫压及风机转速的关系，提出气垫压力作为控制参数，变频器和风机电机为执行机构，风机转速为调节量；主要进行了自整定模糊PID控制器的设计，研究了自整定PID模糊控制器的实现方法，编制了模糊控制规则，制定了模糊控制参数查询表，并分析了影响自整定模糊控制器相关的影响因素，确定了模糊控制表；为了实现半履带式气垫车的自动控制，还提出了计算机模糊控制系统的原理与结构，设计了相应的测量电路与控制软件。

Below the guidance of needle of this one party, the U.S. Army intensified network battle headquarters establish the job, it is when level fixed position will its and fight headquarters set to average degree, headquarters of congeneric beauty aircraftman course.

在这一方针的指导下，美军加紧了网络战司令部的组建工作，并在级别定位时将其与作战司令部等设为平级，同属美空军一级司令部。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。