直接内存访问。
Direct memory access is used to transfer the waveform data as soon as possibile.
采用直接存储器传送，波形数据更换快；
Normally, framebuffer devices give you direct access to the video card's memory.
通常，framebuffer设备都会让您直接访问显卡内存。
Memory is a function of direct access to central processing instruction and data memory.
内存是中央处理机能直接存取指令和数据的存储器。
Memory is a function of direct access to central processing instruction and data memory.
内存是中央处理机能直接存取指令和数据的存储器。
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