Superconducting spiral electromagnets (generating more than two Tesla magnetic fields; L/D ratio: ≥2; ID≥3mm, etc.) 超导螺线电磁体(产生超过2个泰斯拉磁场，长径比≥2，内径≥300mm等),
Electromagnets specifically or primarily intended for use in magnetic resonance imaging devices, except for the other electromagnets listed in heading 90.18 专门或主要用于核磁共振成像装置的电磁体，但税号90.18所列其他电磁铁除外,
