例句與造句

1. Data interchange on 12 . 7 mm wide magnetic tape cartridges - 18 tracks , 1 491 data bytes per millimeter
   12 . 7mm盒式磁帶上的數(shù)據(jù)互換.每毫米18道1491數(shù)據(jù)字節(jié)
2. It's difficult to find byte per millimeter in a sentence. 用byte per millimeter造句挺難的