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pitch circle ['pɪʧ'sɜ:k(ə)l]
earth.sc., mech.eng.	delecirkel
mech.eng.	rulningscirkel; rullecirkel
English thesaurus
pitch circle ['pɪʧ'sɜ:k(ə)l]
railw., abbr.	p.c.

pitch circle : 10 phrases in 4 subjects

Earth sciences	1
Electronics	1
Mechanic engineering	6
Transport	2