bottom dead-centre外死点
inner dead-centre[动力] [机] [车辆] 内死点
dead-centre lathe死顶尖车床
outer dead-centre[动力] 外死点
outer dead-centre position外死点位置
top dead-centre indicator上止点标记
back dead centre死顶尖
UDC upper dead centre上死点
crank dead centre曲柄下止点
N（名词） the exact top (top dead centre) or bottom (bottom dead centre) of the piston stroke in a reciprocating engine or pump (发动机的)死点