查询词典 efficiency

Based on the analysis of teaching process, the concepts of teaching efficiency, learning efficiency, absorptivity of professional knowledge and skills are put forward, and an optimal control model of teaching process is established.

在分析教学过程的基础上，提出了教授率、学习效率、专业知识和技能吸收率的概念，并应用这些概念建立了教学过程最优控制模型。

The model characterizes that the improvement of a student's professional level is related to the teaching efficiency, learning efficiency and absorptivity of professional knowledge and skills.

模型描述了学生专业水平的提高是一个知识和技能逐渐积累的过程，其提高程度与教师的教授率、学习效率、专业知识和专业技能的吸收率有关。

As walk-off angle and acceptance angle of beam limit the conversion efficiency and the tunable wavelength range of difference frequency generation, research include effective nonlinear coefficient, walk-off angle and acceptance angle as functions of wavelength, the relationship between conversion efficiency and acceptance angle, and the impact of crystals length on the process of frequency conversion.

由于光束的走离角、允许角限制了转换效率和差频调谐波长范围，研究内容还涉及了有效非线性系数、走离角和允许角与波长的关系，转换效率与允许角的关系，以及晶体长度在频率变换过程中产生的影响。

Since our focus is on the relationship between corporate investment and earnings quality, this paper reviews related literature in this research field about measurement of earnings quality, corporate investment and investment efficiency, which concise analysis and discussion are also undertaken for corresponding literature, and chapter 3 tries to find theoretical evidence that accounting information can improve the investment decision-making and investment efficiency.

首先回顾了盈余质量、企业投资和投资效率的衡量方法，在此基础上，对国内外近期盈余质量与企业投资规模和企业投资效率的文献进行了回顾和简要的述评。

The business enterprise information the management is usually more complicated because each kind of information is numerous difficult return to gather make use of the calculator support business enterprise high-efficiency complete the business enterprise information management is to adapt the modern business enterprise system request push the business enterprise information management alignment scientific acculturate the norm turns and automates thus raising the business enterprise information management efficiency.

企业信息管理系统是一种典型的信息管理系统其开发主要包括后台数据库的建立和维护以及前端应用程序的开发两个方面。对于前者要求建立起数据一致性和完整性强、数据安全性好的库。而对于后者则要求应用程序功能完备易使用等特点。

To solve the low efficiency of aeration equipments at large, it's a urgent environment protection cause with far-reaching significance to research and develop new aerator that has simple structure and high efficiency.

本文针对一种新型曝气搅拌设备，通过理论分析与实验研究相结合，全面分析和评价该曝气设备的充氧性能，为其运行控制和优化设计提供基础依据。

Based on these recognitions, by the analysis of production method, development formation division, development well grid and well spacing, single well daily rate and recovery efficiency prediction, etc, a development plan was brought to effect: it is all around affusion and made the oil-well of east fault sparse, and predicted the recovery efficiency of 55%, provide a sound foundation for the future development in the area.

在此认识的基础上，通过开采方式、开发层系划分、开发井网和井距、单井日产能力、采收率预测等研究，确立了边外注水+断层东油井抽稀，断层西少部署一排油井的开发方案，利用数值模拟方法，预测采收率为55%，完成油藏开发方案的设计，为该区下一步开发提供了有力依据。

Based on the analysis of soil mechanics for a semi-track air-cushion vehicle,theoretical models for traction efficiency and total power consumption were established,and relationships between slip ratio and traction efficiency,total power consumption were examined respectively.

在分析半履带气垫车所受土壤力的基础上，建立了牵引效率和总功耗的理论模型，讨论了滑转率同牵引效率和总功耗的关系。

Main contributions and achievements are as follows:A general non-equilibrium rigorous model for RDP is developed in this thesis. Based on the pseudo-homogenous assumption, two main factors reaction and separation are de-coupled, and an RDP model with the same format as that for a traditional distillation process is established. To solve the model with a large number of algebraic equations, modified M-K equations with tri-diagonal matrix form are developed based on the improved Separation Efficiency Functions, which greatly increases the iteration efficiency. This thesis also develops a general reactive distillation dynamic model. Through splitting of the differential variables based on SEFS, large-scaled differential algebraic equations can be solved with the improved Gear's algorithm which makes the dynamic model suitable for the on-line application. A simulation platform for the control loop design and evaluation of RDP by introducing control system equations into the dynamic model is also developed.A lactic acid purification pilot-scale RDP is investigated.

论文对热点问题——反应精馏过程的建模与优化控制相关技术进行了深入的研究，取得了一系列成果：1、建立了反应精馏过程机理模型，基于拟均相假设，将反应和分离过程进行解耦，推导出反应精馏过程的非平衡级稳态模型和动态模型，通过引入推广的分离效率函数，对模型变量进行了合理划分，显著提高了模型求解效率；将动态模型和控制系统方程结合，建立了反应精馏过程控制系统研究的辅助工具。2、全面分析了乳酸提纯反应精馏新工艺试验装置，利用本文建立的过程机理模型，对该试验装置进行了稳态和动态性能分析及水力学核算；设计和分析了单边质量控制方案，比较了间接和直接物料平衡控制两种方案的控制性能。

Also the intensity of the reconstruction image was studied in the angle of the influenced by the diffraction efficiency. The diffraction efficiency of the low frequency is lower than that of the high frequency.

另外还从物参比的角度分析了非线性曝光对再现光场的影响，即衍射效率对再现光强的影响，得出低频部分的衍射效率低于高频部分的衍射效率，较好的解释了再现像出现了边缘剪切效应的原因。

Chimborazo and Cotopaxi, took me by the hand.

越过琴博腊索山和科托帕克西山。

This car is in a good condition.

这辆车的状况很好。