库仑是测量静电电荷的单位（如果前述面积是一块合成纤维地毯的话，这种情况就有可能发生。）

COULOMBS measure electric charge (that can occur if said area is a synthetic carpet)

youdao

这样可以极大地扩张其表面积，增加电荷负载，又不会降低材料的机械强度。

This massively increases their surface area and hence the charge they can hold, but without impairing the physical strength of the material.

youdao

使用现存的仪器就可以很简单的探测到电荷，因此一股携带电荷的火山灰流很容易进行追踪，即使火山灰流在可见范围内已经大面积扩散。

Electric charges are fairly easy to observe with existing instruments, so a charged plume should be easier to track, even after the visible plume has largely dispersed.

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