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the mechanisms of paper ageing
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the mechanisms of paper ageing
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the mechanisms of paper ageing
纸张老化机理
在环境因素和时间因素的作用下,纸张的主要化学成分或结构发生不可逆的化学变化,从而导致纸张性能下降的过程。
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index of next larger scale charts
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index of simplicity
index of social progress
index of spatial agglomeration
index of speciality
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index of thousand people
index of total isotropy
index of underground space planning
index of vehicle operation efficiency
index of well-being
index pair
index-preserving projectivity
index raising
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