The rice varieties with strong root system, large active absorption root surface and total root surface area had strong tolerance to copper poison.

根系发达、根系活跃吸收表面积及总吸收表面积大的品种，有较强的耐铜毒性。

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And, at this point, the tiny, dry insulin particles had such a large surface area relative to their mass that, like popcorn or flour, they poured unevenly, leaving air pockets and inconsistent doses.

FORBES: The Impossible Made Possible