two way communication channel

crank angle between two limit positions curing procedure deflection angle of gas flow at nozzle outlet DFR (Dounreay fast reactor) dichroine B genus Marrubium geophysical prospecting glycine melicrate Participaction quartertones round cell scraped surface freezer static oscillograph struggle between vital qi and pathogen tashlikh transmission-level measuring set tricolour direct-view tube varnished insulation wood-shaw