With a piece of porous separator material (it looks like white trash-bag plastic) between them, the positive and negative electrodes are sandwiched together into stacks.

用一块多孔材料(看起来像白色垃圾袋塑料)放在正极和负极中间，像块三明治。

youdao

The three-phase separator and construction material of UASB reactor were also discussed.

对三相分离器和UASB 建筑材料等问题也进行了讨论。

youdao

Some even confused the detection method of oil-water separator material with this detection method.

甚至有人将油水分离材料的检测方法与此混为一谈。

youdao

But for the process to result in a working battery, all five layers must stick together and work in synchrony, and the tricky step was finding a separator material that kept the whole stack in one piece.

BBC: 'Paint-on' batteries demonstrated