active bubble generator

Air Bubble Generator

hybrid bubble generator

jet bubble generator

keyhole bubble generator

Micro-bubble generator

passive bubble generator

generator of air bubble

Code-Generator Generator Language

Bubble and Bubble BnB

bubble cap absorption column; bubble cap absorption tower

Gas bubble growth-gas bubble detachment

alternating current generator {= AC generator}

alternator; alternating current generator {= AC generator}

continuous current generator {= DC generator}

sweep generator time-base generator

[magnetic] half-bubble

a cloud of bubble

adiabatic bubble period