单词 | pipper |
释义 | pipper/ˈpɪpə/originally and chiefly U.S.A.F. noun A gap at the centre of the reticle or cross-hairs on an optical gunsight. In later use also: the visible aiming point of a laser targeting system; the electronic representation of a weapons aiming point on the head-up display of a fighter aircraft. Origin1950s. Probably from pip + -er. |
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