柯林斯英汉双解大词典

tokamak /ˈtɒkəˌmæk/

1.N a toroidal reactor used in thermonuclear experiments, in which a strong helical magnetic field keeps the plasma from contacting the external walls. The magnetic field is produced partly by current-carrying coils and partly by a large inductively driven current through the plasma 托卡马克; 受控热核反应装置 [physics]