日本发明了一种会“说话”的纸。这种纸厚0.75毫米,内置电池和扬声器,表面没有凹凸。纸上有“录音”和“播放”字样,最长能录音20秒。企业和个人可把这种纸制成的明信片寄送给客户和友人,除了把要说的话写在纸上外,还可用声音传达问候,让对方闻其声如见其人。也许有人要问,印刷和邮寄时明信片受到挤压或折叠,是否会影响效果呢?其实大可不必担心,因为纸中的电池和扬声器都是由柔韧材料制成,录音 Japan invented a “talking” paper. This paper thickness 0.75 mm, built-in battery and speakers, the surface is not convex. The paper has “recording” and “play” the words, the longest can record 20 seconds. Businesses and individuals can send postcards made of this kind of paper to their customers and friends, who can not only write on the paper, but also convey the greetings by voice, so that the other party can hear their voices. Some people may ask, postcards printed or postcards squeezed or folded, will affect the effect? ​​In fact, do not have to worry, because the paper in the battery and speakers are made of a flexible material, recording