“aggregate”的概念、定义、翻译、参考文献-科学参考

aggregate

Mathematics

Census returns are used to construct aggregate statistics concerning a wide range of characteristics such as economic, social, health, education, often grouped by geographical region, gender, age, etc. The name derives from the way they are compiled as counts from a large number of individual census returns. See also index (in statistics).

Geology and Earth Sciences

1. In the building and construction industry, a mixture of mineral substances (bulk minerals), e.g. sand, gravel, crushed rock, stone, slag, and other materials (e.g. colliery spoil, pulverized fuel ash) which, when cemented, forms concrete, mastic, mortar, plaster, etc. Uncemented, it can be used as road-making material, railway ballasts, filter beds, and in some manufacturing processes as flux. In road-making, aggregate mixed with bitumen is called ‘coated stone’, and different physical characteristics are required for the different layers comprising the road pavement. Fine aggregate is less than 6.35 mm in diameter, coarse aggregate greater than 6.35 mm. See aggregate tests; pavement.
2. Group of soil particles adhering together in a cluster; the smallest structural unit, or ped, of soil. Aggregates join together to make up the major structural soil units.

Geography

A group of soil particles held together by electrostatic forces, polysaccharide gums, and cementation by carbonates and iron oxides.

单词	aggregate
释义	aggregate Mathematics Census returns are used to construct aggregate statistics concerning a wide range of characteristics such as economic, social, health, education, often grouped by geographical region, gender, age, etc. The name derives from the way they are compiled as counts from a large number of individual census returns. See also index (in statistics). Geology and Earth Sciences 1. In the building and construction industry, a mixture of mineral substances (bulk minerals), e.g. sand, gravel, crushed rock, stone, slag, and other materials (e.g. colliery spoil, pulverized fuel ash) which, when cemented, forms concrete, mastic, mortar, plaster, etc. Uncemented, it can be used as road-making material, railway ballasts, filter beds, and in some manufacturing processes as flux. In road-making, aggregate mixed with bitumen is called ‘coated stone’, and different physical characteristics are required for the different layers comprising the road pavement. Fine aggregate is less than 6.35 mm in diameter, coarse aggregate greater than 6.35 mm. See aggregate tests; pavement. 2. Group of soil particles adhering together in a cluster; the smallest structural unit, or ped, of soil. Aggregates join together to make up the major structural soil units. Geography A group of soil particles held together by electrostatic forces, polysaccharide gums, and cementation by carbonates and iron oxides.
随便看	deceleration parameter Decembrists decentralization DECHEMA de Chéseaux, Comet deci- decibel decibel(symbol: dB) decidability decidable decidable problem decidable set deciduous deciduous forest deciduous teeth decile decimal expansion decimalize decimal places decimal point decimal reduction time decimal representation decimal system decimation decision analysis