在48天的时间里，三个原色纸张样品在三个模拟不同环境条件的反应堆中迅速老化。
For 48 days, three unbleached paper samples aged rapidly in reactors that simulated different environmental conditions.
在48天的时间里，三个原色纸张样品在三个模拟不同环境条件的反应堆中迅速老化。
For 48 days, three unbleached paper samples aged rapidly in reactors that simulated different environmental conditions.
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