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The pilot plant was fed with activated sludge treated secondary

饲喂活性污泥法处理二级

The activated carbon is also key .

活性炭材料也是关键。

The process uses activated carbon , similar to how water filters work , said president and ceo mike durham .

董事长兼ceomikedurham说，这个过程用的是活性炭，和水过滤系统差不多。

In the last few years , scientists noticed that certain genes only seem to be activated when arranged in a certain configuration .

在最近几年里，科学家们发现特定的基因会在形成特定结构时才会有活性。

One is autologous chemotaxis , which occurs in low-cell-density situations or when the ccr7 receptor becomes activated .

一种是自体同源趋化作用（autologouschemotaxis），其发生于低细胞密度情形或ccr7受体变得有活性。