When the RE metal salt was 2%, the coating had the best density and hardness.

当稀土金属盐加入量为2%时镀层密度最大、显微硬度最高。

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S function was the best model in the fitting between stand density and age.

密度与林龄的拟合以S函数为最优模型。

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S function was the best model in the fitting between stand density and age.

密度与林龄的拟合以S函数为最优模型。

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