击芯铆钉 Drive Rivet ; Drive Rivets

沉头击芯铆钉 Countersunk head drive rivets

扁圆头击芯铆钉 Flat round head drive rivets

击芯机 core knock-out machine ; core knock-out device

击打芯片 Hit Chip

冲击式井壁取芯 [油气] percussion side-wall sampling