人妻免费久久久久久久了,亚洲AV无码一区二区三区网站,BBBBB女女女女女BBBB,大香大香伊人在钱线久久

Medical

Medical equipment is an important symbol of modernization, which is the basic elements of medical treatment, scientific research, teaching and research and teaching work. As well it is the basic condition to improve the level of medical science  technology constantly.

The development of clinical medicine largely depends on the development of instruments, even the effect can be decisive. Therefore, the medical equipment has become an important field of modern medical. Medical equipment is individual or combined instruments, equipment, materials or other items used on people.