backing space

backing space

[′bak·iŋ ‚spās]
(engineering)
Space between a fore pump and a diffusion pump in a leak-testing system.
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References in periodicals archive ?
In 1999 Hilton announced that it was backing Space Island Group, a company proposing to fly modified space shuttles into space and link their fuel tanks into a wheel-shaped station reminiscent of the one in Kubrick's film.