2021-04-22 21:40 The magnetic nucleus undergoes spin level splitting under the action of an external magnetic field. When absorbing external electromagnetic radiation, a transition of nuclear spin level will occur, resulting in nuclear magnetic resonance. In organic ... дальше
2020-12-21 20:32 The magnetic nucleus undergoes spin level splitting under the action of an external magnetic field. When absorbing external electromagnetic radiation, a transition of nuclear spin level will occur, resulting in nuclear magnetic resonance. In organic ... дальше
