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手表托架注射模具设计(塑料模具)

手表托架注射模具设计(塑料模具)(包含任务书,外文翻译,论文说明书11000字,幻灯片ppt,17张cad图纸) 摘 要 本文的主要任务是注塑模具结构设计，内容包括塑料模具的工作原理及应用，塑件分析，模具的各零件设计以及总体设计。 大致的设计思路如下：通过所给塑件 ...

手表托架注射设计(塑料)(包含任务书,外文翻译,论文说明书字,幻灯片ppt,17张cad图纸)          
摘   要

本文的主要任务是注塑模具结构设计，内容包括塑料模具的工作原理及应用，塑件分析，模具的各零件设计以及总体设计。

大致的设计思路如下：通过所给塑件的具体分析，确定注塑机；根据所选的注塑机来确定型腔数量和布局；注塑模具的关键是分型面的设计，这关系到产品质量和模具的设计；浇注系统设计包括主流道设计、分流道设计、浇口设计和冷料穴设计；排溢系统设计保证填充效果；成型零件设计计算，保证产品质量和模具的加工制造；导向机构、定出机构、复位机构必须合理；冷却系统设计控制模具温度，影响塑件成型质量。
关键词：Auto CAD, 塑料，注射模，注射机。
 

Injection mold design of watches bracket

The main task of this paper is the structural design of injection molds, including plastic mold of the working principle and application of analysis of plastic parts, mold design and the overall design of the parts.

 Rough design ideas are as follows: through the plastic parts to the specific analysis of injection molding machine; according to the selected cavity injection molding machine to determine the number and layout; injection mold is the key to the design surface, it relates to product quality and mold design; gating system design including the design of the mainstream, separate design, gate design and the design of cold-feed points; row overflow filling system design to ensure results; molding part design terms, to ensure product quality and mold manufacturing;

oriented institutions, for institutions, reset must be reasonable; cooling system designed to control mold temperature, affecting the quality of molding plastic parts.
Key Words: Auto CAD, Plastic, Plastic injection mold, Plastic injection.

浅析《雾都孤儿》中象征手法的运用(包含选题审批表,任务书,开题报告,中期检查表,毕业论文8100字)

摘  要：《雾都孤儿》使英国作家查尔斯•狄更斯誉满全球，作者在作品中采用的象征手法贯穿始终的、无处不在，加强了作品的艺术效果。小说中的象征宛如一部黑白电影, 间或地点缀着几道明亮的色彩, 从而构成独特的艺术风格。其象征手法的运用对刻画人物、烘托主题起了举足轻重的作用，作品中的事物和人物等均被赋予了特殊的象征意义。本文首先分析《雾都孤儿》中象征手法的不可或缺性，然后从小说中主要人物的人名寓意和一些特定对象体现的象征意义着手分析，最后讨论此小说采用象征手法的原因，从而研究《雾都孤儿》中的象征手法。

关键词：《雾都孤儿》；查尔斯•狄更斯；象征手法

Abstract: Oliver Twist makes the English writer Charles Dickens well-known all around the world. Dickens uses the symbolism so skillful which enhances the artistic effects of his work greatly. Symbolism just like a black and white movie embellishes a few bright colors occasionally and forms a unique art style. The application of symbolism plays a decisive role in the presentation of the characters and theme. The object and character in the work are all given special symbolic meanings. This paper researches the symbolism in this novel from the following aspects: the dispensability of symbolism to Oliver Twist; the symbolic meaning of the names of the characters and some specific objects; the factors of adopting symbolism. All these make the symbolism clear to the readers.

Key words:  Oliver Twist; Charles Dickens; Symbolism

Contents
Abstract1
Key words1
Introduction2

1. The dispensability of symbolism to Oliver Twist. 3
1. 1 Symbolism----a literary technique ....... 3

1. 2 Oliver Twist’s influence and literary value.....3

1. 3 Association of symbols in Oliver Twist and the modern society........4
2. The use of symbolism in Oliver Twist    ..5
2. 1 Naming the roles with symbolism .....5
2. 1. 1 Oliver Twist5

2. 2 Attaching symbolic meanings to specific objects..............8
2. 2. 1 Labyrinths and mazes: symbol of confinement to poor people.8
2. 2. 2 The Jew: symbol of evil ....9

2. 2. 3 Bill Sikes’s dog: symbol of Bill’s character.....10
2. 2. 4 Agnes’s portrait: symbol of family tie .11

2. 2. 5 Agnes’s ring and locket: symbol of incomplete union 11
2. 2. 6 Bridges and water: symbol of a halfway point ....12
2. 2. 7 Light and dark: symbol of hope and trap ....13

3. Four factors of adopting symbolism by Charles Dickens in this book...14
3. 1 Symbolism movement .14

3. 2 Purpose of writing Oliver Twist....14

3. 3 Dickens’ fiction under the influence of his life........................15
3. 4 The social background.17
Conclusion17
Notes...18
Bibliography..18

Acknowledgements19

摘要：随着我国经济的高速发展，微电子技术、计算机技术和自动控制技术也得到了迅速发展，交流变频调速技术已经进入一个崭新的时代，其应用越来越广。而电梯作为现代高层建筑的垂直交通工具，与人们的生活紧密相关，随着人们对其要求的提高，电梯得到了快速发展，其拖动技术已经发展到了调频调压调速，其逻辑控制也由PLC代替原来的继电器控制。本文在已有的通变频器的基础上，采用PLC对电梯进行控制，通过合理的选择和设