The state of water was measured using spin-lattice and spin-spin relaxation times, or T1 and T2 respectively.
水分状态的测定使用自旋-晶格和自旋-自旋弛豫时间（T1和T2）。
2
So what that means is that we're limited in any atom to having two electrons per orbital, right, because for any orbital we can either have a spin up electron, a spin down electron, or both.
Beyond spintronics, the discovery that DNA has a strong effect on electron spin suggests that spin interactions could also play a role in some biological processes.