bit density

基本解释

Such as easy cutting paste, a bit not careful density board they smoke.
譬如容易切割糊，稍不留神密度板就冒烟了。
blog.sina.com.cn
The fourth-generation Deskstar 7K2000 uses the company's proprietary five-platter design with relaxed bit density and perpendicular magnetic recording technology.
这款产品采用了5盘片设计，并使用垂直磁记录介质等技术。
As a storage media of information, DNA has a huge capability. Storing information in molecules of DNA could allow for an information density of approximately 1 bit per cubic nanometer.
DNA作为信息的载体其贮存的容量非常之大，1立方米的DNA溶液可存储1万亿亿的二进制数据；

s And if we go ahead and superimpose the 3 s on top of the 3 p, you can see that the 3 s actually has some bit of probability density that gets even closer to the nucleus than the 3 p did.
如果我们继续将,重叠到3p上面，你们会看到3s事实上,有一点概率密度,距离原子核更近,比3p轨道。
麻省理工公开课 - 化学原理课程节选

That's quite a bit shy of the 326 ppi LCD on the iPhone 4S and the 264 ppi density of the new iPad's display, but it's still a massive improvement over the 1680 x 1050 pixels found on Apple's previous-generation clamshell.
ENGADGET: Apple announces first Retina display in a MacBook, 220ppi with 2880 x 1800 resolution
The American city of the future is going to look a little bit more like the American city of the past, more closely centered on a high density downtown with mass transit increasingly used to get workers in and out.
FORBES: Why Oil Prices Rose in the Spring of 2008 and Will Rise Again