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m是专著,j是期刊,c是会议论文,d是学位论文,p是专利,s是标准,db是数据库,ol是指联机网络m。 加上J/N的分别是网络上的专著和期刊。 本回答被网友采纳

kb(即k)、mb(即m)、gb等都是基于字节换算的存储单位。三者的换算为1kb=1024b,1mb=1024kb,1gb=1024mb。 在计算机内部,信息是釆用二进制的形式进行存储、运算、处理和传输的。因为电脑内部电路工作有高电平和低电平两种状态,二进制表示信号以便计。

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