“mega-”的概念、定义、翻译、参考文献-科学参考

mega-

Physics

Symbol M. A prefix used in the metric system to denote one million times. For example, 10⁶ volts=1 megavolt (MV).

Chemistry

A prefix used in the metric system to denote one million times. For example, 10⁶ volts = 1megavolt (MV).

Chemical Engineering

A prefix used to denote a million, for example one megajoule (1 MJ) is equal to a million joules.

Computer

(symbol: M) A prefix indicating a multiple of one million (10⁶), as in megahertz and megawatt. When the binary number system is used in a structure or process (as in semiconductor RAM or ROM), the prefix then indicates a multiple of 2²⁰, i.e. 1 048 576, as in megabyte or megabit. The context usually clarifies which meaning is intended, although being numerically close the meanings are often considered more or less equivalent. See also binary prefixes.

Biology

1. A prefix denoting large size; e.g. meganucleus, megasporangium.
2. Symbol M. A prefix used in the metric system to denote one million times. For example, 10⁶ volts=1 megavolt (MV).

Geology and Earth Sciences

From the Greek megas meaning ‘great’, a prefix meaning ‘very large’. Attached to SI units, it denotes the unit ×10⁶.

单词	mega-
释义	mega- Physics Symbol M. A prefix used in the metric system to denote one million times. For example, 10⁶ volts=1 megavolt (MV). Chemistry A prefix used in the metric system to denote one million times. For example, 10⁶ volts = 1megavolt (MV). Chemical Engineering A prefix used to denote a million, for example one megajoule (1 MJ) is equal to a million joules. Computer (symbol: M) A prefix indicating a multiple of one million (10⁶), as in megahertz and megawatt. When the binary number system is used in a structure or process (as in semiconductor RAM or ROM), the prefix then indicates a multiple of 2²⁰, i.e. 1 048 576, as in megabyte or megabit. The context usually clarifies which meaning is intended, although being numerically close the meanings are often considered more or less equivalent. See also binary prefixes. Biology 1. A prefix denoting large size; e.g. meganucleus, megasporangium. 2. Symbol M. A prefix used in the metric system to denote one million times. For example, 10⁶ volts=1 megavolt (MV). Geology and Earth Sciences From the Greek megas meaning ‘great’, a prefix meaning ‘very large’. Attached to SI units, it denotes the unit ×10⁶.
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