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11 小时
Water-absorbing beads pose increasing hazard for young children: Researchers test methods ...
Water-absorbing beads have become increasingly hazardous to children over the past 10 years, as children who swallow the ...
BBC
2 天
The uses of polymers
It then goes on to describe what a smart polymer is, before focusing on one type of superabsorbent, hydrogel. It gives an interesting example of how this product, which is used in nappies, has a ...
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