Readback voltage of perpendicular recording for high track density with ring-type head is theoretically calculated, and rcadback noise is analysed.

本文从理论上对高道密度垂直磁记录环形头读出电压进行了计算，并对道间串扰进行了分析。

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The invention relates to a projection-type head lamp capable of reinforcing light in a dark space, which comprises a lamp holder, an illuminating part, a shading plate and a light guide plate.

一种可补强暗区光线的投射式头灯，包含：一灯座、一发光件、一遮光板， 以及一导光板。

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Having any allergy was associated with a 59% reduced risk of any type of head and neck cancer, the study found.

WSJ: Music Ability Helps Reading

As he probably suspected, the research revealed he had the type of head trauma from repeated hits that can lead to depression, which can lead to suicide.

FORBES: Connect

It has been billed as the type of film that makes viewers head straight to the phone to call Mom after watching it.

CNN: Tears flowing at theaters this fall