electronic flash unit

identical unit or proportional unit of the body

time-rock unit =time-stratigraphic unit

a flash in the pan

Abel closed cup flash point

Abel closed cup flash point apparatus

Abel flash point test

Abel flash point tester

Abel Pensky flash point test

Abel-Pensky flash point apparatus

AC rail flash butt welding

ADC， flash or parallel type

Adiabatic Flash

alternating current rail flash butt welding

automatic flash light

blister flash smelting

blowdown flash tank

blue flash

busy-flash

CG flash