Although its visual effect is so pronounced, dust is only a minor constituent of the material, extremely low in density, that lies between the stars.

尽管它的视觉效果如此显著，但尘埃只是位于恒星之间的物质的一个次要组成部分，其密度极低。

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Since then, technologists have improved the effect, and it is now widely used to detect the tiny patches of magnetism that store information on high-density disk drives.

从那时起，技术人员不断地完善这个技术的效果，现在被广泛用于检测在高密度磁盘驱动器中存储信息的微小磁性小块。

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It controls the over production of cortisol by the adrenal glands, which include the effect of reducing the immune response, bone density and increase blood pressure.

它通过肾上腺控制分泌过盛的皮质醇。压力也会削弱免疫应答、骨骼密度，还会增高血压。

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How do we know if the road type is swamping any effect from traffic density?

BBC: Crashes

The cheap revolution is a first-order effect of Moore's Law. (Moore's Law predicts the transistor density on silicon chips will double every 18 to 24 months.) For years if you said "Moore's Law, " people presumed you were describing a future of ever more powerful computers.

FORBES: Jim Michaels Broke the Mold