Gamma Knife is one of the most expensive medical equipment in the world, and was introduced into our country in 1992.

伽玛刀是世界上最昂贵的医疗设备之一，我国从1992年开始引进。

youdao

Gamma Knife is one of the most expensive medical equipment in the world, and was introduced into our country in 1992.

伽玛刀是世界上最昂贵的医疗设备之一，我国从1992年开始引进。

youdao