然后，在猫眼石结构表面用电沉积法镀上一层镍膜，之后把猫眼石蚀刻掉，再经过电解抛光，增加这些镍膜空隙度。
After that, a layer of nickel was electrodeposited on the opal, which was then etched away. The porosity of the nickel layer was then increased using electropolishing.
所有的燃料电池有相同的基本结构，包括一种电解质和两种电极。
All fuel cells have the same basic configuration; an electrolyte and two electrodes.
每个电池元都包括一个正电极和一个负电极，两个电极用一个浸在导电电解液中的隔离器隔开，该电解液允许离子而不是电子在两个电极之间来回传输(译者注：具体参见下面那个电池结构图)。
Each cell consists of a negative electrode and a positive electrode kept apart by a separator soaked in a conductive electrolyte that allows ions, but not electrons, to travel between them.
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