查询词典 definite

Secondly, based on enterprises conditions, port enterprises definite thecore index and set up index system.

然后，根据企业的具体情况确定适当的核心指标，建立多元的指标体系。

ABSTRACT Aiming at problems of trans-vector controller in a vehicle-carried induction motor such as variable rotor and stator resistance following motor temperature, and their inductance varying with flux saturation degrees. Firstly, CSI and VSI are introduced, for CSI, it can hold the advantages both FOC and DTC using stator flux directional, PI parameter and simulation are also introduced. Secondly, equations of IM in the synchronous rotary frame and its static counterpart, as figuring in the saturation condition of magnetic field, are dealt in this paper and the simulation results are presented. Thereafter, the parameter designing of PI trans-vector controller is processed, which features the non-linear model. In practical realization, as neglecting the dynamical change of motor inductance, this paper employs online modification of inductance parameters, according to the flux saturation, then transforms the non-linear equations into linear ones, and so compacts the structure of controller. Thirdly, in view of the maximum torque output is extraordinary requisite when Electrical Vehicle start up, accelerate, and overtake, this paper issues the maximum torque when both inverter and battery capacity is corporeally definite. Fourthly, on-line differentiating and analyzing both rotor's time constants and its flux by using the expanding order reduction and discrete Kalman filter equation are fathomed, in order to realize high-performance trans-vector algorithm, and also the simulation results are presented. Fifthly, the close-loop regenerative brake system, when the EV's torque is set constant, is deduced; at the same time, unification of electric drive model and brake model is executed. Combined with maximum charge current demands, the mathematical model for online yielding torque as a demand.

本论文针对车载异步电机在矢量控制器所遇到的问题：定转子电阻随温度变化及随电机饱和程度变化的转子电感及定子电感而影响电机调速性能提出一套完整的解决方案：分析了电流型逆变器和电压型逆变器在实现矢量控制时控制器参数的计算，分析出对于电流型逆变器在采用定子磁场定向时，其性能同时具有矢量控制和直接转矩控制两者的优势，并对电压型逆变器在转子磁场定向下的模型进行了仿真研究；建立异步电机非线性模型，推导出考虑磁饱和时异步电机在同步旋转坐标系及静止坐标系下的方程，并做出了仿真结果，建立异步电机在非线性模型下的矢量控制调节器的PI参数设计，在实际应用中，若忽略电机电感的动态变化，可以根据当前的磁路饱和状态而在线修正电感参数，从而将非线性方程线性化，降低控制器的复杂度；考虑到电动汽车在起动和加速超车时需要电机有最大转矩输出，本文讨论在逆变器容量一定和电池供电能力有限的情况下电机最大转矩输出问题；推导了异步电机扩展降阶、离散卡尔曼滤波方程在线辨识转子时间常数和转子磁通，用于实现高性能的矢量控制算法，并给出了仿真结果；推导出了电动汽车恒转矩给定的闭环回馈制动系统，实现了电动控制模型和制动模型的统一，而且结合铅酸电池最大充电电流的要求，为制动转矩在线给定建立了数学模型；设计了基于双DSP系统的高性能矢量控制器软硬件框图，并以大量实验数据说明矢量控制在电动汽车应用的实际应用状况。

The results showed that IFN-γ immunoreactive structures widely distributed in CA1,CA2,CA3 and indusium griseum,which indicates IFN-γ have definite influence on physiological function of hippocampus.

IFN-γ与神经系统的关系目前已逐渐引起人们的重视，已有研究表明，在大鼠神经系统的脊神经节、交感神经节、下丘脑乳头体核和中脑背侧被盖内有IFN-γ分布1

The results showed that IFN-γ immunoreactive structures widely distributed in CA1, CA2, CA3 and indusium griseum, which indicates IFN-γ have definite influence on physiological function of hippocampus.

结果表明，IFN-γ免疫反应主要分布于海马CA1、CA2、CA3区，有少量分布于灰被，齿状回。这为海马具有免疫调节功能的观点提供了新的证据。结合文献，推断IFN-γ在海马－下丘脑－垂体－肾上腺的免疫调控中起主要作用。

An optimal control model is developed for the definite linear economic systems with an inequality constraint on state integrals, based on the dynamic input-output theory.

利用动态投入产出模型和控制理论方法相结合，对经济系统进行分析和宏观调控·具有状态积分不等式约束的确定性线性经济系统最优控制模型，是基于动态投入产出理论建立的·利用无约束条件的极大值原理，分析了最优技术与经济控制策略的存在性和惟一性，使得产品的实际产出尽量接近理想产出，同时使能源、资金等消耗最小，并给出了最优反馈控制的形式

By redefining multiplier associated with inequality constraint as a positive definite function of the originally-defined multiplier, it is no longer necessary to convert inequality constraints into equality constraints by slack variables in order to reuse the method dedicated to equality constraints for constructing Lagrange neural networks.

若重新定义与不等式约束相关的乘子为正定函数，则在构造Lagrange神经网络时，可直接使用处理等式约束的方法处理不等式约束，不需再用松驰变量将不等式约束转换为等式约束，减小了网络实现的复杂程度。

As far as the legal documents of the central government are concerned, the provisions of the constitution, organic law and the law in environmental protection field are abstract and inexplicit. While combining these documents with administrative regulations and other informal sources, we find that the boundary of power of the State Environmental Protection Administration of China is very definite. But the boundary of other environmental protection administrations is unclear.

就中央法律文件对建设项目环境影响评价文件审批权的配置而言，宪法、组织法和环境保护领域法律的规定是比较抽象而不明确的，但当结合行政法规、规章以及其他规范性文件进行考察时，就会发现，中央法律文件对于国家环境保护行政主管部门审批权力的配置并不是不清楚，而是十分明确的；但对各级地方环境保护行政主管部门的权力配置则主要是授权性的规定。

B It is also generally held, and rightly, that questions of dogmatic fact, in regard to which definite certainty is required for the safe custody and interpretation of revealed truth, may be determined infallibly by the Church.

人们还普遍举行，这是正确的，问题的教条，事实上，在这方面一定可以确定的是所需的安全保管和解释揭示了真理，可能确定的infallibly由教会。

Another student had very definite ideas about search engines and their attributes. He explained that Yahoo!, for example, is for entertainment and Magellan or InfoSeek arefor more scientific material. When searching, he mentioned a couple of times that he could choose another engine, but in reality he always used the search button without selecting a search engine.

另外一个学生对於搜寻引擎有非常清楚的主意，他解释关於雅虎，举例来说：它可以提供足够的资料在Magellan or InfoSeek，当搜寻的时候，他提及很多的时间，他能够选择另外的引擎，但是实际上他总是使用使用搜寻的按钮而没有使用选择一个搜寻引擎。

The rural settlement system is the fundamental unit of the rural inhabitable environment, It is a kind of rural life system, which has definite territory boundary and spatial concepts , also it is a rural human-environment territory system .

乡村住区系统是乡村人居环境的基本功能单元，是具有一定地域边界和空间内涵的乡村生活系统，也是一种乡村人地关系地域系统。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新