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The yield of screened pulp almost unaltered, brightness can be increased 6.5%ISO, and Kappa number can be decreased 6.61 during impregnation with chemical.
采用化学药品预浸与常规烧碱-蒽醌法蒸煮细浆得率相比几乎不变，而白度提高6．5％ISO，卡伯值降低了6．61。
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