- all drilled hole
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English-Chinese electricity dictionary (电气专业词典). 2013.
all drilled hole
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Hole saw — Not to be confused with Core drill. A 52 mm (2.0 in) hole saw with pilot bit … Wikipedia
Through-hole technology — Through hole technology, also spelled thru hole , refers to the mounting scheme used for Pin through hole (PTH) electronic components that involves the use of pins on the components that are inserted into holes drilled in printed circuit boards… … Wikipedia
Hughes bore hole — The Hughes borehole is an acid mine drainage site located near the southwest central borough of Portage, Pennsylvania in Cambria County. In the 1920s, a hole was drilled in order to remove water from the myriad coal mines in the area. In the… … Wikipedia
Drill bit — For the fictional character, see Drill Bit (Transformers). For the cancelled skyscraper nicknamed Drill bit, see Chicago Spire. For the types used in drilling wells, see Well drilling. From top to bottom: Spade, lip and spur (brad point), masonry … Wikipedia
Drilling rig — For a detailed diagram of a Petroleum drilling rig, see List of components of oil drilling rigs. Drilling rig preparing rock blasting … Wikipedia
petroleum production — Introduction recovery of crude oil and, often, associated natural gas from the Earth. petroleum is a naturally occurring hydrocarbon material that is believed to have formed in deep sedimentary (sedimentary rock) beds from animal and … Universalium
Printed circuit board — Part of a 1983 Sinclair ZX Spectrum computer board; a populated PCB, showing the conductive traces, vias (the through hole paths to the other surface), and some mounted electrical components A printed circuit board, or PCB, is used to… … Wikipedia
List of Chinese inventions — A bronze Chinese crossbow mechanism with a buttplate (the wooden components have … Wikipedia
Rivet — A rivet is a mechanical fastener. Before it is installed it consists of a smooth cylindrical shaft with a head on one end. The end opposite the head is called the buck tail. On installation the rivet is placed in a pre drilled hole. Then the tail … Wikipedia
hand tool — any tool or implement designed for manual operation. * * * Introduction any of the implements used by craftsmen in manual operations, such as chopping, chiseling, sawing, filing, or forging. Complementary tools, often needed as auxiliaries to… … Universalium
Offshore oil and gas in the United States — provides a large portion of the nation’s oil and gas supply. Large oil and gas reservoirs are found in the sea nearby Louisiana, Texas, California, and Alaska. Environmental concerns have prevented or restricted offshore drilling in some areas,… … Wikipedia
