By combining the photoelectron spectroscopy (PES) with theoretical calculations, the ionization potentials of iodine trichloride were studied.

结合紫外光电子能谱实验和量子化学计算方法研究了三氯化碘的电离能。

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Since that time, PES we've been able to actually measure these bond strengths by PES, photoelectron spectroscopy.

自从那时，我们就能够用,测量键的强度，光电子能谱。

麻省理工公开课 - 固态化学导论课程节选