A new process of the bio-electrode rotating contactor (BERC) for denitrification was developed, and study was made for autotrophic denitrification by using hydrogen as electron donor.

采用旋转电极型生物反应器（B ERC）脱氮，对以氢气作为电子供体的自养反硝化进行了研究。

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One way to think about it, if we want to use a classical analogy, which often helps to give us an idea of what's going on, is the spin of an electron, we can picture it rotating on its own axis.

如果我们用一个，经典的比喻来考虑它的话，这经常会帮助我们建立起一些概念，就是我们可以把电子的， 自旋想象是它绕着轴自转。

youdao

One way to think about it, if we want to use a classical analogy, which often helps to give us an idea of what's going on, is the spin of an electron, we can picture it rotating on its own axis.

如果我们用一个，经典的比喻来考虑它的话，这经常会帮助我们建立起一些概念，就是我们可以把电子的，自旋想象是它绕着轴自转。

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