The basic input device on most small computer system is key board.
大多数小的计算机系统中的基本输入设备是键。
CPU, a very small unit, is the core of computer system.
中央处理器是一个非常小的单元，是计算机系统的心脏。
PC_401 computer system was introduced to the double crystal goniometer for small Angle scattering measurement.
对双晶衍射仪实行改造，用一台PC _ 401微机直接控制和进行小角散射等测量。
PC_401 computer system was introduced to the double crystal goniometer for small Angle scattering measurement.
对双晶衍射仪实行改造，用一台PC _ 401微机直接控制和进行小角散射等测量。
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