化学专业文献英文长句求翻译.T T

题目

化学专业文献英文长句求翻译.T T
R(某个未知量) is the distance at which 50% of the energy is transferred and is a function of the spectral overlap of the donor emission and acceptor absorption, refractive index of the medium, quantum yield of the donor, and a factor k2(某公式) that depends on the relative orientation in space between the transition dipoles of donor and acceptor.
求大神指教啊.T^T有道真心木有用.

答案

R 是在50%的能量被转移的时候的距离,它是一下因素的函数：
1 供体发射与受体吸收的光谱的重叠,
2 介质的折射率,
3 供体的量子产率,和
4 取决于供体和受体的过渡偶极子之间的空间的相对方位的 k2 因子