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数学
STUDY ON POSITRON ANNIHILATION LIFETIME SPECTRA IN RAW AND HEAT-CURED SILICONE RUBBER
<正> The method of analyzing positron annihilation lifetime spectra was used to study molecular structures of raw silicone rubbers with different molecular weights and heat-cured silicone rubbers's constitutions. The positron annihilation lifetime spectra were measured using a fast-fast coincidence circuitry positron lifetime spectrometer modified by us from a fast-slow delayed coincidence positron lifetime spectrometer
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Chinese Science Bulletin
1989年07期

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