- switch base plate
- 开关板
English-Chinese electricity dictionary (电气专业词典). 2013.
English-Chinese electricity dictionary (电气专业词典). 2013.
Base — or BASE may refer to:A base is a mixture of urine n waste so do not eat it* Base meaning bottom, the lowest part of an object* can mean negative, unfavorable or undesirable in nature. Bad; vile; malicious; evil.In mathematics: *Base (mathematics) … Wikipedia
Switch hitter — This article is about the term in baseball. For the cricket term, see Switch hit. For the Arrested Development episode, see Switch Hitter. In baseball, a switch hitter is a player who bats both right handed and left handed. Contents 1 Baseball 2… … Wikipedia
Stolen base — The all time stolen base leader, Rickey Henderson, swipes third in 1988. In baseball, a stolen base occurs when a baserunner successfully advances to the next base while the pitcher is delivering the ball to home plate. In baseball statistics,… … Wikipedia
Double switch (baseball) — In baseball, the double switch is a type of player substitution. The double switch is typically used to make a pitching substitution, while simultaneously placing the incoming pitcher in a more favorable spot in the batting order than was… … Wikipedia
Lefty-righty switch — In baseball, the lefty righty switch is a maneuver by which a player that struggles against left or right handed players is replaced by a player who excels in the situation, usually only for the duration of the situation in question. For instance … Wikipedia
On-base plus slugging — (OPS) is a sabermetric baseball statistic calculated as the sum of a player s on base percentage and slugging percentage.[1] The ability of a player to both get on base and to hit for power, two important hitting skills, are represented. An OPS… … Wikipedia
GPO telephones — The United Kingdom s General Post Office (GPO) had a number of telephones that were provided by them for connection to their exchanges. Until 1982 the GPO had a monopoly on the provision of all telephones within the UK and so the range was… … Wikipedia
Glossary of rail terminology — Rail transport Operations Track Maintenance High speed Gauge Stations … Wikipedia
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Permanent way — The permanent way means the physical elements of the railway line itself: generally the pairs of rails typically laid on sleepers embedded in ballast, intended to carry the ordinary trains of a railway. This page describes British practice and… … Wikipedia
Rail profile — Rail from 1896 Cross sections of flat bottomed which can rest directly … Wikipedia