annihilation造句
61. Optical absorption spectra and positron annihilation radiation Doppler broadening were measured at room temperature.
62. The vacancy - defect properties were measured by slow positron annihilation, and mechanical behaviors were studied using nanoindentation.
63. According to the values of the life time of positron annihilation, the model of positron annihilation in the rare-earth polyacetylene was proposed.
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