Ultracapacitors also have two metal plates, but they are coated with a sponge-like, porous material known as activated carbon.
超级电容也有两块金属片，但其外面有海绵状的多空材料，即活性炭涂层。
The amount of magnetic material has been doubled in the new bridge allowing inspection of thicker plates and through thicker coatings than previously possible.
比起原先，新的磁桥中磁性材料的数量增加了一倍，因而与之前相比，可以检测更厚的板材和穿透更厚的涂层。
The results showed that the thin plates produced by slurry method could improve the utility of active material and the ability of high-rate discharge performance.
实验结果证明：拉浆法制造的薄极板可以提高活性物质的利用率，改善了电池的大电流放电能力。
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