microgroove

/mahy-kruh-groov/US // ˈmaɪ krəˌgruv //UK // (ˈmaɪkrəʊˌɡruːv) //

微凹槽,微槽,微沟,微凹凸

Definitions

n.名词 noun

1
- : a needle groove so narrow that over 200 can be cut in an inch of playing surface on a long-playing record.