Jisho

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Noun
1. back pressure
Wikipedia definition
2. Back pressureBack pressure refers to pressure opposed to the desired flow of a fluid in a confined place such as a pipe. It is often caused by obstructions or tight bends in the confinement vessel along which it is moving, such as piping or air vents. Because it is really resistance, the term back pressure is misleading as the pressure remains and causes flow in the same direction, but the flow is reduced due to resistance.
Read “Back pressure” on English Wikipedia
Read “背圧” on Japanese Wikipedia
Read “Back pressure” on DBpedia

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