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Periodical

The hall-effect electronic compass.

Subjects: *SCIENTIFIC apparatus & instruments; *COMPASS (Orienteering & navigation); *GLOBAL Positioning System

  • Source: Popular Electronics. Aug97, Vol. 14 Issue 8, p33. 4p. 1 Color Photograph, 3 Black and White Photographs, 2 Diagrams, 1 Chart.

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Academic Journal

小型履带式油菜播种机导航免疫PID 控制器设计.

Subjects: *AUTOMATIC control systems; *PID controllers; *CROPSCHINA

  • Source: Transactions of the Chinese Society of Agricultural Engineering. 2019, Vol. 35 Issue 7, p12-20. 9p.

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