But below a certain density, hair stops insulating and wicks heat off the body instead-helping the elephants get rid of an extra 20 percent of their body heat, especially on windless days.

但当毛发密度低于一定程度时就不再隔热，而是散发身体的热量——大象可通过这种方式散发20%的身体热量，尤其是在无风的日子里。

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Because the intermediate nodes have to bear the extra task, this article increases the inner node density of the network approach to balance the node energy consumption in sensoring field.

因为中间节点要承担多余的转发任务，本文中采用增加网络内层节点密度的办法来均衡各个位置的节点能量消耗。

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Support for extra high density displays.

支持超高密度的显示。

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Birds were given different colors, squawks and abilities such as extra density, acceleration and the power to lay explosive eggs in the air before winging off their parabolas from the counterforce of laying eggs.

FORBES: Audacious Birds

It's actually a slight step down in terms of pixel density, but the extra space is more than worth it, as now this can make for a passable video player.

ENGADGET: iPod nano review (2012)