液压传动

The fact that solution of wave equation is equivalent to the extreme value of quadratic function solution was verified, and the existence and uniqueness of the quadratic function solution was also proved.

证明了波动方程的解和二次泛函极值解的等价性，以及二次泛函极值解的存在唯一性，为其在液压传动中流体瞬变分析的进一步应用提供了理论依据。

In traditional teaching, the teacher use the wall map, the filmstrip to explain in detail primarily, or in the simple and remove-install test in hydraulic transmission laboratory , result in the student lacks the necessary sensitive faculty knows, making teaching effect's anti very ideal.

在传统教学中，教师主要通过挂图、幻灯来讲解，或者在液压传动实验室进好的简单的拆装试验，造成学生缺乏必要的感性认识，使教学效果no很理想。

In traditional teaching, the teacher use the wall map, the filmstrip to explain in detail primarily, or in the simple and remove-install test in hydraulic transmission laboratory , result in the student lacks the necessary sensitive faculty knows, making teaching effect\'s anti very ideal.

在传统教学中，打压泵，教师主要通过挂图、幻灯来讲解，或者在液压传动实验室进行简单的拆装试验，造成学生缺乏必要的感性认识，使教学效果不很理想。

Fluid Drive and Control .

液压传动与控制。

Using fluid drive, this machine can realize the function of lifting and flexing.

该机选用液压传动、前置式作业，可实现升降、伸缩回转等功能。

This expert system can distinguish fault patterns,analyze fault reasons and put forward proposals by using this expert system to commutator of some fluid drive system . The result basically conformed to the reality, and it had the very good true value .

运用本专家系统对某液压传动系统的换向阀进行分析和诊断，结果表明该专家系统能对提升机进行故障诊断和故障原因分析，运行结果基本符合实际，具有很好的实用价值。

By using FluidSIM software to simulate the operation of hydraulic circuit in fluid drive praxis teaching, students can clearly understand the various components in the loop phase of the exercise process, deepen their understanding of circuit components and understanding of the principles.

在液压传动实践教学中应用FluidSIM软件对回路进行模拟运行和检验，使学生能够清晰地了解各元件在回路各个运动阶段的工作过程，加深对元件和回路原理的理解。

All the control circuits of electromotors are designed base on relay by the start-keep-stop circuit make up of buttons and contectors. The fluid drive is designed base the PLC.

其中各电动机的控制电路采用按钮和接触器组成起保停电路的继电器控制方案；液压传动部分采用PLC控制方案。

There is no clutch pedal, because the clutch is automatic while the gearshift is implemented by electro-hydraulic actuators.

离合器踏板是没有的，因为离合器是自动的，其变档由电动液压传动装置完成。

This paper introduces the applications of HST on tractor in detail and analyzes the different configurations and control methods.

本文详细介绍了静液压传动技术在拖拉机上的各种应用，对不同的配置方案和控制方式进行了分析。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。