Moreover, the surface charge density of lipidic nanostructures can be varied in a simple manner.

更重要的是，其表面电荷密度可以通过简单方式改变。

youdao

But now, if I integrate the charge density over the entire region, then what I will get is actually the total amount of electric charge inside the region.

如果将电荷密度对整个区域做积分，将得到，在区域内的电量总和。

youdao

So for example, that might have a formal charge of negative 1, because to some extent it has gained that much electron density that it now has a formal charge that's negative.

比如，可能它的形式电荷为负一，因为在一定程度上它得到了这么多的共用电子密度，那么它现在就有了负的形式电荷。

youdao

So for example, that might have a formal charge of negative 1, because to some extent it has gained that much electron density that it now has a formal charge that's negative.

比如，可能它的形式电荷为负一，因为在一定程度上它得到了这么多的共用电子密度,那么它现在就有了负的形式电荷。

麻省理工公开课 - 化学原理课程节选

The research team is currently investigating a laser lift-off technology to facilitate the mass production of flexible LIBs and 3D stacking structures to enhance charge density of batteries.

ENGADGET: Korean scientists solve flexible battery riddle (video)