多部件

The basic approach of protecting people from being hurt or killed in an accident is to improve crashworthiness of vehicles. This paper starts with discussing theories and methods for vehicle passive safety design, which included experiential methods, analytic methods, multi-body dynamics methods, crash test methods and the finite element method. Emphasis will be paid to the basic FEM theories and algorithms of impact problems. Topics discussed include the governing equation, element discretization, hourglass control, time integration, material model, shell element algorithms and contact-impact algorithms. For more reliable simulation results, this paper then conducts study on how to accurately get material model parameters by combining the FEM method with experimental method, and develops relevant material test machine and parameter calculating software. Based on that, basic typical impact simulation and test validation study are conducted. On the basis of the above work, the paper studies the thin-shell structures'crashworthiness, which was affected by the following factors: spot-weld features, shell thickness, cross-section and pre-deformation. As to vehicle parts'crashworthiness, the paper conducts simulation study of designing energy-absorbing steering system and adaptive airbag system. A practical energy-absorbing steering wheel is designed as an example. In further depth research, the paper suggests several inverse quantificational methods for vehicle crashworthiness design based on the ideal crash characteristics. The above theories and methods are applied with good results through several practical vehicles' crashworthiness design and improvement.

文中对汽车碰撞安全性的设计理论和方法进行了归类和总结，其中包括经验法、解析法、多刚体动力学法、试验法以及有限元方法等；重点介绍了碰撞有限元法的基本理论和有关算法，涉及到有限元求解控制方程、单元离散、沙漏模态控制、时间积分、材料模型和应力修正、薄壳单元算法以及接触碰撞界面算法等，探讨了有限元计算中的材料模型参数获取技术，开发了相应的材料试验装置及材料模型参数反求软件，在此基础上进行了基本的碰撞仿真算例和试验对比研究；文中通过应用有限元方法研究了薄壁构件的碰撞吸能特性，指出了设计薄壁吸能构件时需要考虑的几个主要影响因素，即焊点、壁厚、横截面和预变形等；在关于车辆部件的碰撞安全性能设计中进行了吸能转向机构和自适应安全气囊的仿真研究，提出了吸能转向机构和自适应安全气囊的仿真研究方法；文中最后探讨了整车碰撞性能的设计与改进方法，提出了以理想碰撞特性为目标，采用分段加速度或者根据碰撞时间进行设计的反推设计法、部件吸能仿真优化设计法等量化设计方法，并通过综合应用文中所讨论的相关技术进行了整车碰撞性能的设计与改进实例研究，所选定的车型是大众化的普通轿车和碰撞安全性基础较差的微型面包车，研究结果表明，本文所提出的设计与改进方法是适用而有效的，具有重要的工程实用意义和价值。

You can open, or load, more than one part at any time and work on several parts concurrently.

你可以同时打开或者加载多个部件。已加载的部件，有两种状态

A pulsator for a washing machine is provided, which comprises: a main body installed on a bottom of the washing tub, and having a fan chamber and a upper surface formed with at least a spout outlet; a spout fan having a fan shaft and a plurality of fan blades extending radially from the fan shaft, the spout fan rotates relative to the main body to eject washing water upwards through the spout outlet; a bearing means for rotatably supporting the fan shaft in a radial direction as well as an axial direction; and means for rotating the spout fan.

一种洗衣机波轮，包括：一个安装在洗衣筒的底部的主体，具有叶轮室以及形成有至少一个喷水出口的上表面；一个具有叶轮轴和多个从叶轮轴沿径向延伸的扇叶的喷水叶轮，该喷水叶轮相对于主体旋转从而产生向上的洗涤水流；可在径向以及轴向上旋转支承叶轮轴的支承部件；以及使喷水叶轮旋转的部件。

At present ,the company introduced the Multi -Position NC Punch, NC shear-bending machine and other high-tech production equipment, become a South China elevator door, the door of the components , security controls,variable frequency door machine , on the threshold of the component parts, such as elevator major production base

目前，公司引进了多工位数控冲床、数控剪弯机等高科技生产设备，成为华南电梯开门构、层门组件、安全部件、变频门机上坎组件等电梯部件的主要上产基地。

This system can complete quickly,the realtime parametric design of turbojet,turbofan,turboprop and turboshaft engine and its parts.During designing the required information,data and structural graphics can be inquired interactively from Aeroengine Information Database and Structure Database.

该系统可以实现对涡喷、涡扇、涡轴和涡桨航空发动机部件图和总图的参数化实时设计，在参数化设计过程中提供发动机信息数据库、结构数据库的交互式查询，为设计提供所需的信息、数据和结构图形支持，可达到快速地生成供方案论证应用的各种航空发动机部件图、总图及各种信息，能快速实现多方案对比设计。

The faceblank is an important functional assembly in the overall design of the facepiece,which puts other functional assemblies,such as eyepieces,breathing system,voice transmitter and nosecup etc.

罩体是将防毒面具中各功能部件(如眼窗、呼吸气系统、通话器和阻水罩等)组成为一个整体的骨架，是面罩总体设计中的一个重要部件，涉及面罩十多项技术性能指标。

Because it has high flexibility, it makes operator can arrange all kinds of equipment conveniently. The unique motion part of flectional beating in the transmitting pipe. Therefore the property of machine is reliable. It does not need to maintain nearly and cannot take place the problem of pollution caused by lubricating grease of beating.

挠性螺旋体是该输送机唯一的运动部件，无论做多远距离输送，输送管中没有轴承等其它运动部件，因此该输送机性能可靠，几乎不需要维修，不会发生如周朝呢感润滑油污染输送物料这类问题。

It supports the scheduling of multicycle and chained operations, functional pipelines, etc.

它支持多周期操作与链式操作到非流水线功能部件与流水线功能部件的调度。

Wherein, the handle is formed by the hand-holder and a handle tube with adjustable length; the machine body has a handle mounting part and several parts inside it to filter the foreign matters of air; the fixing plug can fix handle tube on the machine body; the handle guider can guide the handle tube on one side of machine body and it is formed by the inner guider at the back of machine to cover the front of handle tube and a outer guider outside the inner guider to cover the back of handle tube, while the inner and outer guiders have protective element to avoid their damage caused by the friction between them and handle tube.

把手由手握部和可调整长度的把手导管构成；机身形成有把手安装部，并内置多个部件而过滤空气中异物；固定插座将把手导管固定在机身上；把手导向在机身的一侧引导把手导管移动。把手导向由在机身后面包住把手导管前面的内侧导向和在内侧导向外侧包住把手导管后面的外侧导向构成。这样的内侧导向和外侧导向还配备保护部件，防止内侧导向和外侧导向与把手导管摩擦而受到损伤。

For instance: MCU is used as the controller, GSM as the communication component, GPS as the Global Position component, PPI as the data exchange interface with PLC controller, and they communicate through their own channels respectively without disturbance.2. According to the special function demands of the grab machine, a series of practical communications protocol has been made.

该终端以单片机作为控制器，GSM作为与外部通信部件，GPS作为全球定位信息采集部件，PPI作为与工程机械PLC数据交换接口，通过多路通信接口实现信息互不干扰传输。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。