方法采用1%晔康杀蟑胶饵和0.5%氯菊酯的烟雾剂，密度监测采用粘捕法。

Methods 1%yekang cockroach gel bait and 0.5% Permanone smoke fog were used for chemical control. Adhesive killing method was applied in density investigation.

youdao

在给定的时间步长数内，我们把所有存储有密度值的网格点上的烟雾都——绘制出来，连在一起便能看到烟雾的扩散效果。

In the given time steps, all the smoke on the grid unit with density value stored in it are drawn and the diffusion effect can be seen when all the smokes are connected.

youdao