ECN (engineering change notice)

Arthur Conan Doyle blow-valve book agent calf's snout catecholate cephalispa scutellata cercospora arisaematis change of denomination chloromercuribenzoates coronal loops frequency-selective level indicator pitch (of rifling) pull the trigger sensum sentence connector shoulder drops surface undulation system platform tuberculous tenosynovitis very high density lipoprotein (VHDL)