求翻译：在活性污泥法中，微生物以活性污泥为载体而存在，因此污泥浓度是考察活性污泥反应器的一个重要指标。培养过程中污泥MLSS的变化情况如图2-12所示。是什么意思？

In activated sludge, activated sludge microorganisms to exist as a carrier, so the sludge is to examine the concentration of activated sludge reactor is an important indicator. MLSS sludge process of training the changes shown in Figure 2-12.

In activated sludge method, micro-organisms to activated sludge as the carrier of sludge concentrations exist, and therefore is to examine the activated sludge reactors an important indicator. In the process of cultivating sludge MLSS changes in as shown in Figure 2 -12.

In the active sludge law, the microorganism exists take the active sludge as the carrier, therefore the sludge density is inspects the active sludge reactor an important target.In the raise process sludge MLSS change situation as shown in Figure 2-12.

In the activated sludge, microorganisms to exist as a carrier of activated sludge, sludge concentration therefore is to investigate a major indicator of activated sludge reactors. MLSS in the cultivation of sludge changes as shown in Figure 2-12.

In the activated sludge, microorganisms to exist as a carrier of activated sludge, sludge concentration therefore is to investigate a major indicator of activated sludge reactors. MLSS in the cultivation of sludge changes as shown in Figure 2-12.