International Commission on Irrigation & Drainage Commission Interationale des Irrigation et du Drainage

Multilingual Technical Dictionary (MTD)
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Term No.Term Name/Term DescriptionAction
934
Physical model
Model based on conservation of laws of mass, energy, and momentum  and on the similarity between water flow in a prototype and flow in a reduced-scale model of the prototype.......
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1117
Physical yield limit, or Potential yield
The greatest rate of artificial withdrawal from an aquifer that can be maintained throughout the foreseeable future without regard to cost. Equal therefore to the present recharge, or that anticipated in the foreseeable future, less the unrecoverable natural discharge......
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1650
Mechanical analysis, or Physical analysis
The process of separating a soil by mechanical means into various sized particle groups according to an effective diameter......
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8538
Iconic models, or Physical models
A physical replica of the real system on a reduced scale.
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8652
Physical simulation (Model)
A model in which the relationships, internal or functional, are presented physically as in hydraulic models.
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8737
Physical quantity
Any dimensional property of a body, such as length, weight, viscosity, mass, temperature, volume and so forth.
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8757
Movable bed models, or Mobile bed models
Models wherein the bed or side wall  material is subject to erosion.
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8758
Rigid models
Models that are built with non-erodible bed and side walls.
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8759
Semi-rigid models
Models constructed with certain parts rigid and certain parts mobile, such as, for example, a model with sides built in cement mortar while the bed is moulded in sand......
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8887
Physical data
In reference to planning and development of water resources projects, this term includes hydrological and topographical information, cadastral survey, geology of the area and data on soils, sedimentation, vegetation, fish and wildlife......
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8903
Geophysical survey
The exploration of an area in which geophysical properties and relationship unique to the area are mapped by one or more geophysical methods. In groundwater exploration relating to particular localities, this survey would give specific information as to the depth and extent of groundwater bodies as determined by recognizable lithological and strati.....
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