“string”的概念、定义、翻译、参考文献-科学参考

string

Physics

A one-dimensional object used in theories of elementary particles and in cosmology (cosmic string). String theory replaces the idea of a pointlike elementary particle (used in quantum field theory) by a line or loop (a closed string). States of a particle may be produced by standing waves along this string. The combination of string theory with supersymmetry leads to superstring theory.

Mathematics

A synonym for word.
See elastic string, inextensible string.

Astronomy

See cosmic string.

Chemical Engineering

The full length of tubing or a drill pipe that is used in an offshore drilling operation.

Computer

1. A flexible one-dimensional array, i.e. a flexible vector, of symbols where the lower bound of the vector is fixed at unity but the upper bound, i.e. the string length, may vary.
2. A type of input to a graphics system consisting of a sequence of characters. The usual input device is a keyboard. See also logical input device.
3. Any one-dimensional array of characters. In formal language theory a string is often referred to as a word. See also sequence.

Internet

A sequence of characters usually enclosed within single or double quotation marks.

Geology and Earth Sciences

1. (flyer) Up to ten geophones which are connected together permanently but have only one lead on to the seismic cable.
2. (drill string) The rods (flights) and tools from the drill collar to the bit which, when connected together, enable a borehole to be drilled.

单词	string
释义	string Physics A one-dimensional object used in theories of elementary particles and in cosmology (cosmic string). String theory replaces the idea of a pointlike elementary particle (used in quantum field theory) by a line or loop (a closed string). States of a particle may be produced by standing waves along this string. The combination of string theory with supersymmetry leads to superstring theory. Mathematics A synonym for word. See elastic string, inextensible string. Astronomy See cosmic string. Chemical Engineering The full length of tubing or a drill pipe that is used in an offshore drilling operation. Computer 1. A flexible one-dimensional array, i.e. a flexible vector, of symbols where the lower bound of the vector is fixed at unity but the upper bound, i.e. the string length, may vary. 2. A type of input to a graphics system consisting of a sequence of characters. The usual input device is a keyboard. See also logical input device. 3. Any one-dimensional array of characters. In formal language theory a string is often referred to as a word. See also sequence. Internet A sequence of characters usually enclosed within single or double quotation marks. Geology and Earth Sciences 1. (flyer) Up to ten geophones which are connected together permanently but have only one lead on to the seismic cable. 2. (drill string) The rods (flights) and tools from the drill collar to the bit which, when connected together, enable a borehole to be drilled.
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