However, the final nucleus density obtained on gradually increasing the methane concentration from 0.6% to 1.2% is smaller than that deposited at a methane concentration of 1.2%.
但是甲烷浓度由0.6%逐渐增加到1.2%时，所得最终形核密度比一开始就将甲烷浓度设为1.2%的形核密度低。
However, the final nucleus density obtained on gradually increasing the methane concentration from 0.6% to 1.2% is smaller than that deposited at a methane concentration of 1.2%.
但是甲烷浓度由0.6%逐渐增加到1.2%时，所得最终形核密度比一开始就将甲烷浓度设为1.2%的形核密度低。
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