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MB    
兆字节

兆字节

MB
百万数元组 MB

Mb
n 1: a unit of information equal to 1000 kilobits or 10^6
(1,000,000) bits [synonym: {megabit}, {Mbit}, {Mb}]
2: a unit of information equal to 1000 kilobytes or 10^6
(1,000,000) bytes [synonym: {megabyte}, {M}, {MB}]
3: a unit of information equal to 1024 kibibytes or 2^20
(1,048,576) bytes [synonym: {megabyte}, {mebibyte}, {M}, {MB},
{MiB}]
4: (a British degree) a bachelor's degree in medicine [synonym:
{Bachelor of Medicine}, {MB}]

(Or "Mb") {megabytes} or {megabits}. When referring to
the size or data transfer rate of a storage device which is
accessed in multiples of eight bits (e.g. {RAM}, {hard disk})
this almost certainly means megabytes, but when referring to
the data transfer rate of a communications system it probably
means {megabits}. Some years ago, it is claimed, "MB" always
meant megabytes and "Mb" meant megabits but recently this
useful distinction has been lost.

(1996-09-22)


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