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。
Our main products are as follows: numeral two-side grinder, timing flat polishing machine, singal or double head diamant flat grinder, retainer ring type timing polishing machine, ect.
主要产品有数控双面研磨机、调速平面抛光机、单(双)头金刚石平面磨床、挡圈式调速抛光机等。
High pressure vessel with hemispherical head thinner than cylinder wall is a new type of vessel which consists of sealing device, cylinder, hemispherical head and reinforcing ring.
半球形封头壁厚与筒体壁厚不相等的高压容器是由端部密封装置、筒体、半球形封头和加强箍等组成的一种新结构容器。
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