液压

In this paper, only the main hydraulic transmission system of the forging press is introduced in detail.

本文只详细介绍快锻机的液压主传动系统，主要论及液压驱动系统的设计；设备的工作原理和工作过程以及主传动系统的操作原理；充液罐的设计以满足快锻锤头快降时为主缸提供大量的液压能；插装阀块的设计以及充液罐零件的设计，泵站的设计

A new energy-saving hydraulic pumping unit was designed, which had compound Cylinder-accumulator system, it can use the gravitational potential energy of the pumping unit.

研究出一种节能型液压抽油机，该液压抽油机采用复合缸--蓄能器液压系统，可以回收利用下行程时抽油杆释放出来的重力势能，具有显著的节能效果。

In this paper, based on the dynamic analysis of sheet metal hydroforming, a new structure of hydroforming mould for motorcycle oil box is introduced.

但是板材液压成形工艺与模具的设计目前尚无完善的理论，文章基于板材液压成形的力学分析，设计了一套摩托车油箱的液压成形模具。

Firstly, based on the analysis of hydraulic mounts structure, operating principle, ideal dynamic characteristics and the testing results of dynamic characteristics, its vibration isolation performance was incipiently evaluated.

首先，通过对液压悬置的结构、工作原理和理想动特性的分析，并结合全顺客车所使用液压悬置动特性的试验实测结果，对该种液压悬置的隔振性能作出了初步评价。

Leakiness is a common problem existing in hydraulic machinery, which causes bad influence for the normal usage of the machinery. By analysis to the main parts where leakiness occurs in hydraulic system and their causes, measures to Control the leakiness are put forward.

泄漏是液压机械普遍存在的故障现象，给机械的正常使用造成不良影响，通过分析液压系统产生泄漏的主要部位及原因，提出了控制液压系统泄漏的措施。

It refers to stepper motor, hydraulic slide valve, position feedback loop combination in the design of internal hydraulic cylinder, connected to hydraulic oil source, all the functions directly through a dedicated digital controller, computer or PLC programmable logic controller A digital pulse signal to complete the length of vector control of high-tech products.

它是指将步进电机、液压滑阀、闭环位置反馈设计组合在液压缸内部，接通液压油源，所有的功能直接通过专用数字控制器、计算机或PLC可编程控制器发出的数字脉冲信号来完成长度矢量可控的高新技术产品。

As long as the user enters the required technical data by a man/machine interactive interface,the computer will calculate module of static data design.

液压原理图的设计是液压系统设计的第一步，也是实现整个液压系统综合性能的关键。

In this paper, a fluid dynamics model of hydaulicline including frequency-dependent friction is developed andits approaximate expression is got. Two mathematical treat-ments for the approximation are considered.

l引言 由于在液压系统动力学中，液压管道的动力响应有重要影响，所以建立管道的动态模型，特别是准确反映液压管道内各变量间传递关系的分布参数模型，就成为一个重要问题。

On this background, I designed the system based on mini-computer chip and hydraulic equipment. The traditional systems are more complex, their efficiency and precision are not so high. While my design use the hydraulic element as the executive cell, and use the mini-computer as its control part. By this way, we can get a better system.

本设计在这样的背景下设计了用液压与单片机联合控制的控制系统，这里采用液压元件作执行机构，控制部分由电磁换向阀和微机系统共同实现，这样不仅大大简化了以前的液压系统，而且使机器的印花质量和效率也会有一定的提高。

In the design, It causes the hydraulic cylinder with a movable pulley the stroke to reduce one half, and avoides using a stroke longer hydraulic cylinder.In this way,it reduces difficulty of the hydraulic cylinder's produce.

在设计中，用一个动滑轮使液压缸的行程减少了一半，避免使用行程较长的液压缸，减少了制造液压缸的难度。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。