engelska-finska översättning av butterfly door

A car door similar to scissor door, but while scissor doors move straight up via hinge points at the bottom of the A-pillar, butterfly doors move up and out via hinges along the A-pillar
A door which pivots on a central axis, used in locations with a pressure differential between the two sides of the door, so that forces exhibited do not inhibit opening and closing of the door, due to contrary action of forces on the two halves of the door which open inwards and outwards at the same time. National Fire Protection Association, [http://www.nfpa.org/Assets/files/AboutTheCodes/130/ROPA-1995-130.pdf "Report of the Committee on Fixed Guideway Transit Systems"], NFPA 130 - A95 ROP

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