If you've ever prepared breakfast sandwiches at home, you know that it's a multi-step process requiring more than one pan and a toaster for the bread.
如果您曾经在家里做过三明治早餐，您一定知道多个步骤过程往往需要不只一个平底锅，以及一个用来烤面包的多士炉等厨具。
In comparison with PAN, PAN-PPO showed a high electrocatalytic activity for oxidation of methanol and the electro-oxidation reaction was controlled by the diffusion step.
在甲醇酸性体系中，PAN-PPO对甲醇具有较好的电催化活性，此反应受扩散控制。
In comparison with PAN, PAN-PPO showed a high electrocatalytic activity for oxidation of methanol and the electro-oxidation reaction was controlled by the diffusion step.
在甲醇酸性体系中，PAN-PPO对甲醇具有较好的电催化活性，此反应受扩散控制。
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