原子比值
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The results showed that oxygen to carbon atomic ratios gradually increased and the valence states of carbon markedly changed during the ozone bleaching of oxygen-delignified birch kraft pulp.
结果表明，氧脱木素桦木硫酸盐浆臭氧漂白期间氧碳比逐渐增加，碳价态发生了显著变化。
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