phonocardiograph

pho.no.car.di.o.graph

n.（名词）
An instrument consisting of microphones and recording equipment used to monitor and record heart sounds and murmurs.
心音描记图：由话筒和记录装置组成的仪器，用来监测和记录心脏声音和杂音

【引伸】
pho.nocar.diograph.ic
adj.（形容词）
pho.nocar.diog.raphy