论文部分内容阅读
什么是高新技术?人们常常觉得它很深奥,离自己很遥远。其实,高新技术不知不觉早巳进入寻常百姓家,使我们的生活更多姿多彩。 邻居老李家有个“守护神”,外人一进门就会呜哇呜哇发警报。这“守护神”就像个半导体收音机。原来,人体会散发热量,上海一家公司的科技人员利用滤光片能感受人体体温的特点,采用红外技术制成便携式示警器,在漆黑一团的夜晚,即使小猫小狗迅捷跑过,它也能明察秋毫。但它又不会草木皆
What is high-tech? People often think it is very esoteric, far away from myself. In fact, high-tech unknowingly entered the homes of ordinary people, making our life more colorful. Old neighbors have a “patron saint,” an outsider will be wow Wow hair alarm. This “patron saint” is like a semiconductor radio. It turned out that the human body will emit heat, Shanghai, a company's scientific and technological personnel to use the filter can feel the body's temperature characteristics, the use of infrared technology made portable alarm device, in the dark night, even if the kitten quickly ran through it, it Can also be clearly observed. But it will not be overwhelming