filter hole
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oil filter hole — A hole at the top of the engine (usually the rocker cover) through which new oil can be added after the oil filler cap is removed … Dictionary of automotive terms
filter — [1] A device designed to remove foreign substances or particles from air, oil, gasoline, water, etc. [2] A device used either with the drier or as a separate unit to remove foreign material (contaminants) from the refrigerant Also see air cleaner … Dictionary of automotive terms
hole — See access hole bolt hole countersunk hole cubby hole drain hole limber hole oil filter hole pilot hole radiator fill hole spurt hole … Dictionary of automotive terms
Filter (optics) — Coloured and Neutral Density filters Optical filters are devices which selectively transmit light of different wavelengths, usually implemented as plane glass or plastic devices in the optical path which are either dyed in the mass or have… … Wikipedia
Hole in the head disease — are susceptible in marine aquaria.ymptomsThe symptoms are well described by the name. First, the fish will develop small, grey, pin hole abrasions around the eyes and head. As the disease progresses, it spreads down the lateral line. These… … Wikipedia
Distributed element filter — Figure 1. A circuit featuring many of the f … Wikipedia
Spatial filter — A spatial filter is an optical device which uses the principles of Fourier optics to alter the structure of a beam of coherent light or other electromagnetic radiation. Spatial filtering is commonly used to clean up the output of lasers, removing … Wikipedia
Power dividers and directional couplers — A 10 dB 1.7–2.2 GHz directional coupler. From left to right: input, coupled, isolated (terminated with a load), and transmitted port … Wikipedia
Drilling fluid — This article is about fluids used when drilling a well. For fluids used with drill bits during metal working, see cutting fluid. Driller pouring a foaming agent down the rod string on a drilling rig In geotechnical engineering, drilling fluid is… … Wikipedia
Drilling mud — In geotechnical engineering, drilling mud, also known as spud mud (when beginning the drilling process), is a drilling fluid used to drill boreholes into the earth. Often used while drilling oil and natural gas wells and on exploration drilling… … Wikipedia
