机械英文翻译样稿.doc

英文翻译
机械设计
一台完整机器设计是一个复杂过程。机械设计是一项发明性工作。设计工程师不仅在工作上要有发明性，还必需在机械制图、运动学、工程材料、材料力学和机械制造工艺学等方面含有深厚基础知识。
Machine Design
The complete design of a machine is a complex process. The machine design is a creative work. Project engineer not only must have the creativity in the work, but also must in aspect and so on mechanical drawing, kinematics, engineerig material, materials mechanics and machine manufacture technology has the deep elementary knowledge.
任何产品在设计时第一步就是选择产品每个部分组成材料。很多材料被今天设计师所使用。对产品功效，它外观、材料成本、制造成本作出必需选择是十分关键。对材料特征必需事先作出仔细评定。
One of the first steps in the design of any product is to select the material from which each part is to be made. Numerous materials are available to today's designers. The function of the product, its appearance, the cost of the material, and the cost of fabrication are important in making a selection. A careful evaluation of the properties of a. material must be made prior to any calculations.
仔细正确计算是必需，以确保设计有效性。在任何失败情况下，最好知道在最初设计中有有缺点部件。计算（图纸尺寸）检验是很关键。一个小数点位置放错，就能够造成一个本能够完成项目失败。设计工作各个方面全部应该检验和复查。
Careful calculations are necessary to ensure the validity of a design. In case of any part failures, it is desirable to know what was done in originally designing the defective components. The checking of calculations (and drawing dimensions) is of utmost importance. The misplacement of one decimal point can ruin an otherwise acceptable project. All aspects of design work should be checked and rechecked.
计算机是一个工具，它能够帮助机械设计师减轻繁琐计算，并对现有数据提供深入分析。互动系统基于计算机能力，已经使计算机辅助设计（CAD）和计算机辅助制造（CAM）成为了可能。心理学家常常谈论怎样使大家适应她们所操作机器。设计人员基础职责是努力使机器来适应大家。这并不是一项轻易工作，因为实际上并不存在着一个对全部些人来说全部是最优操作范围和操作过程。另一个关键问题，设计工程师必需能够同其它相关人员进行交流和磋商。在开始阶段，设计人员必需就初步设计同管理人员进行交流和磋商，并得到同意。这通常是经过口头讨论，草图和文字材料进行。
The computer is a tool helpful to mechanical designers to lighten tedious calculations, and provide extended analysis of available data. Interactive systems, based on computer capabilities, have made possible the concepts of computer aided design (CAD) and computer-aided m