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Irrigation Dictionary : Table of Contents (members login required)\t
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Term No.Term NameTerm Description
2218Panel wallA non-bearing partition between columns and/or piers. In irrigation context it is a distinct wall in between the two supports or either ends......
318Panoramic perspective, Curvilinear perspective, or Cylindri-cal perspec-tivePerspective when the picture is made on a concave cylindrical surface as in a panorama......
3241Paper sleevesTubes of paper used for covering the projecting end of reinforcement bars at the joints to prevent the surrounding concrete from bonding to the bars......
2311Parabolic weirA measuring weir whose notch is bounded on the sides by parabolas (illustrated)......
2980Paradox controlIt is an automatic mechanical follow-up valve that controls water pressure to ensure positive positioning of a needle (closing member). This control i.....
2950Paradox gateA high pressure service gate used as a companion to the ring follower gate for opening or closing off flow under heads up to and in excess of 180 metr.....
4648Parallel canal, or Side canalA canal built by the side of an important canal (main canal or lateral or a branch of the latter) in order to serve the lands lying alongside. It is c.....
5196Parallel field ditch systemA system similar to bedding, except that the drains are spaced farther apart and have a greater capacity than the dead furrows. The minimum depth of t.....
7981Parallel floodwayThis is a floodway that is running over shorter-longer distances parallel to the river. It is constructed to divert part of the flood runoff. It could.....
5135Parallel grid systemSubsurface drainage system, where the drains are installed parallel to each other......
5197Parallel lateral open ditch systemA system similar to field ditch system, except that the ditches are deeper and cannot be crossed with most machinery (illustrated)......
8244Parallel operationA method of data transmission in which all bits of a digital word are handled simultaneously with each bit on a separate line. Although faster and sim.....
314Parallel perspective, or One-point perspectivePerspective wherein the principal lines of the picture are either parallel or perpendicular to the picture plane......
8245Parallel ProcessingProcessing of program instructions by dividing them among multiple processors with the objective of running a program in lesser time......
5137Parallel systemA system of parallel field drains with most of the row drains or field drains normal to the collector drains. Parallel drainage systems facilitate mec.....
42Parameter1 - An unknown factor that may vary over a certain set of values. This word occurs in defining frequency distributions (e.g. `population parameter`) o.....
8550Parameter1 -A definable character of a system that remains constant during some mathematical calculation. 2 - See 42......
8551Parametric programmingThe study of continuous parameter changes......
43Parametric test, or Test parametricA test when the distribution function of the test statistic depends on the form of the distribution function of the observations. Example Student test.....
4287ParapetThe portion of steining above the ground level built to prevent surface water from going into the well and to suit the water lifting arrangement......
6904ParasiteAn organism living in or on another organism (the host) from which it obtains its food; may or may not be harmful to the host......
1988ParasiticPertaining to, or with the habit of, a parasite (living on other organisms)......
1915ParenchymaIsodiametric living mature cells with cellulose thin walls or thick walls......
3316Parent canalWith reference to any canal, the canal which feeds it with water supply......
1591Parent materialThe material from which soils and subsoils are presumed to have developed......
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