Drilling (other)

	Drilling (other) Drilling is the cutting of a hole into a solid. Drilling may also refer to: * Boring (earth), cutting a hole into the earth * Combination gun, a multi-barreled firearm See also * Data drilling * Drill (other) * Perforation (other) * Boring (other) Boring may refer to: Something that causes boredom Engineering and science Boring (earth), drilling a hole, tunnel, or well in the earth ** Tunnel boring machine, a machine used in boring tunnels * Boring (manufacturing), enlarging a hole th ... {{dab ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Drilling Drilling is a cutting process where a drill bit is spun to cut a hole of circular cross-section in solid materials. The drill bit is usually a rotary cutting tool, often multi-point. The bit is pressed against the work-piece and rotated at rates from hundreds to thousands of revolutions per minute. This forces the cutting edge against the work-piece, cutting off chips (swarf) from the hole as it is drilled. In rock drilling, the hole is usually not made through a circular cutting motion, though the bit is usually rotated. Instead, the hole is usually made by hammering a drill bit into the hole with quickly repeated short movements. The hammering action can be performed from outside the hole ( top-hammer drill) or within the hole ( down-the-hole drill, DTH). Drills used for horizontal drilling are called drifter drills. In rare cases, specially-shaped bits are used to cut holes of non-circular cross-section; a square cross-section is possible. Process Drilled holes ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Boring (earth) Boring is drilling a hole, tunnel, or well in the Earth. It is used for various applications in geology, agriculture, hydrology, civil engineering, and mineral exploration. Today, most Earth drilling serves one of the following purposes: * return samples of the soil and/or rock through which the drill passes * access rocks from which material can be extracted * access rocks which can then be measured * provide access to rock for purposes of providing engineering support Unlike drilling in other materials where the aim is to create a hole for some purpose, often the case of drilling or coring is to get an understanding of the ground/lithology. This may be done for prospecting to identify and quantify an ore body for mining, or to determining the type of foundations needed for a building or raised structure, or for underground structures, including tunnels and deep basements where an understanding of the ground is vital to determining how to excavate and the support philosophy. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Combination Gun A combination gun is a firearm that usually comprises at least one rifled barrel and one smoothbore barrel, that is typically used with shot or some types of shotgun slug. Most have been break-action guns, although there have been other designs as well. Combination guns using one rifled and one smoothbore barrel are commonly found in an over-and-under configuration, while the side-by-side configuration is usually referred to as a cape gun. A combination gun with more than two barrels are called a (German for "triplet") with three barrels, a (German for "quadruplet") with four barrels, and a (German for "quintuplet") with five barrels. Combination guns generally use rimmed cartridges, as rimless cartridges are more difficult to extract from a break-action firearm. Use Combination guns have a long history in Europe, Middle East, Asia, and Africa that date back to the early days of cartridge firearms. These guns are almost exclusively hunting arms. The advantage of having a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Data Drilling Data drilling (also drilldown) refers to any of various operations and transformations on tabular, relational, and multidimensional data. The term has widespread use in various contexts, but is primarily associated with specialized software designed specifically for data analysis. Common data drilling operations There are certain operations that are common to applications that allow data drilling. Among them are: Query operations: * tabular query * pivot query Tabular query Tabular query operations consist of standard operations on data tables. Among these operations are: * search * sort * filter (by value) * filter (by extended function or condition) * transform (e.g., by adding or removing columns) Consider the following example: Fred and Wilma table (Fig 001): gender , fname , lname , home male , fred , chopin , Poland male , fred , flintstone , bedrock male , fred , durst , usa female , wilma , f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Drill (other) A drill is a tool or machine for cutting holes in a material. Drill may also refer to: Animals * Drill (animal), a type of African primate * Oyster drill, a type of snail Military * Military exercise * Foot drill, the movements performed on a military parade * Former name of the United States Army Reserve's Battle Assembly * Exhibition drill, a form of complex military drill * Drill commands * When applied as an adjective, a practice version of something, e.g., drill round Music * Drill music, a subgenre of trap music Performers * Drill (band), an alternative rock band * Drill (UK band), an industrial rock band from England * The Drill (band), an electro house band Recordings * ''Drill'' (album), a 1996 album by the band of the same name * ''Drill'' (EP), a 1992 EP by Radiohead * ''The Drill'' (album), a 1991 album by Wire * ''Drill'', a 1996 album by Noise Unit * "Drill", a 2021 song by G Herbo from the album '' 25'' Safety exercises * Fire drill * Tornado drill * L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Perforation (other) A perforation is a small hole in a thin material or web. Perforation may also refer to: * A leaf feature * Perforation (oil well), a hole punched in the casing or liner of an oil well to connect it to the reservoir * Perforation gauge, a term used in philately * Postage stamp perforation, used to separate postage stamps * Film perforations, the holes placed in the film stock during manufacturing and used for transporting * Hair perforation test, a laboratory test used to help distinguish the isolates of dermatophytes * Hydro-slotted perforation, a process in oil and gas drilling * Organ perforation, a complete penetration of the wall of a hollow organ in the body, including: Corneal perforation Eardrum perforation Esophageal perforation Gastrointestinal perforation Nasal septum perforation Stercoral perforation Uterine perforation Uterine perforation is a potential complication of any intrauterine procedure. It may be associated with injury to surroundi ... [...More Info...] [...Related Items...] OR:** [Wikipedia] [Google] [Baidu]