https://yousefabad.salamsch.com/pschool/wp-content/uploads/2019/01/azmayesh-dabestan-salam.jpg1280960bahareh tanhahttp://yousefabad.salamsch.com/pschool/wp-content/uploads/2021/01/IMG_20210117_230820_665.pngbahareh tanha2019-01-16 13:05:572019-01-16 13:06:14آزمایش مواد رسانا و نارسانای الکتریکی