光声机

Nowadays with the booming development of microelectronic technique, the functions of the components of machinery, electricity, magnetism, optics, acoustics and thermotics have been improved rapidly. And the micromation of components, the integration of electronic equipments, the worse working environment, the increasing requirement and EMI, all of these make the structural design of electronic equipments more and more important.

在微电子学高度发展的今天，促使机、电、磁、光、声和热等元器件功能飞速提高，随着元器件微型化，电子设备趋向集成化，再加上一些日趋恶劣的工作环境，各种使用要求的提高，空间电磁环境的干扰，以及由于装填密度高，产生的内在干扰等，使得电子设备的结构设计变得越来越重要。

Push a science technical development:Car is gather a voice, light, machine, give or get an electric shock, hot, the electronics, chemical engineering, beautiful work is in the whole body of high-tech product, is also unique in the world of a kind of spare parts with ten thousand account, the yield be accounted with ten million, retention quantity with hundred million account, the selling price be accounted with 10000 dollars of merchandise.

推动科学技术的发展：汽车是集声、光、机、电、热、电子、化工、美工于一身的高科技产品，也是世界上唯一的一种零件以万计、产量以千万计、保有量以亿计、售价以万元计的商品。

John Robbins lives with his family in Santa Cruz, California.

约翰罗宾和家人居住在加利福尼亚州的圣克鲁斯县。

The international background is mainly the economic ties among different nations tented to be widen and deepen at the peace and development times.

国际背景主要是和平与发展时代条件下的世界各国经济贸易联系的日益加深。