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paper pulp
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paper pulp
纸浆
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back fill
backfill
backfiller
backfilling
back filling
back filling
backfilling
back-filling finish
back filling system
backfill under pressure
backfin
backfin
backfire
backfire
back fire
backfire
backfire antenna
backfire bomber
back flap
backflash
back flash
back flashover
backflat
backflow
backflow
科学时代收录了1160609条科普词条,基本涵盖了常见科普常识及英语词汇的翻译,是科学学习和研究的有利工具。
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