| 单词 | positron emission spectroscopy |
| 释义 | positron emission spectroscopy [`päz·ǝ´trän i¦mish·ǝn spek`träs·kǝ·pē] SPECTROSCOPY A technique in which a solid surface is bombarded with a low-energy monoenergetic positron beam and the energies of positrons emitted from the surface are measured to determine the amounts of energy lost to molecules adsorbed on the surface. |
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