low-pres·sure /ˈloˈprɛʃɚ/
(a.)低壓的,悠然自得的
Low-pres·sure a.
1. Having, employing, or exerting, a low degree of pressure.
Low-pressure steam engine, a steam engine in which low steam is used; often applied to a condensing engine even when steam at high pressure is used. See Steam engine.
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low-pressure
adj : not forceful; "a low-pressure salesman"; "a low-pressure
campaign"