单词	abac scale
释义	ABAC scale ABAC scale A nomogram for obtaining the conversion angle to apply when plotting great circle bearings on a mercator projection. ABAC scale ABAC scale A nomogram for determining the conversion angle to apply when plotting great-circle bearings on a Mercator projection. ABAC scales are printed on the margins of Mercator plotting charts. Scales A and C are interrelated, as are B and D. In the illustration, the ABAC scale measures the conversion angle for two places that have a 16° change of longitude between them and a mean latitude of 50°. The conversion angle in this case is 6°.
随便看	trofimenko, sergei trofimenko, sergei georgievich trofim lysenko trofimov, vasilii trofimov, vasilii dmitrievich trofimuk, andrei trofimuk, andrei alekseevich trog troggs trogiomorpha trogir trogium trogium pulsatorium trogliatazone troglitazone troglobite troglodite troglodyte troglodyte mode troglodytes troglodytes aedon troglodytes troglodytes troglodytic troglodytical troglodytidae

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