单词 | navigation system |
释义 | > as lemmasnavigation system navigation system n. a device to assist or automate navigation. ΘΚΠ society > travel > air or space travel > action of flying (in) aircraft > navigation of course of aircraft > [noun] > navigational systems OBOE1945 navar1946 omni-range1947 omni1949 tacan1955 navigation system1959 nav/com1966 nav/attack1967 1959 Observer 8 Feb. 4/5 A..flying aid invented in America and developed here..is a ‘high accuracy hyperbolic navigation system’. 1991 Pop. Sci. Mar. 23/1 Unmanned subs with their own navigation systems..are becoming an important tool for oceanographers. < as lemmas |
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