Isbn: 9787503836930 - 我们身边的科学：身边的电子学 (1 resultados)

paperback. Condición: New. Paperback Pages. Number: 285 Language: Chinese Even young children know the importance of power. but 100 years ago. the world has not a lamp. and a generator; an overhead wire. there is no period of The cable laying in the ground. At that time. even the most far-sighted industrialists refused to invest in the career of the power penny. In the garden of electrical applications. we have to enjoy the fruits such as electric lights. telephones. televisions. refrigerators. computers and other abno.…