спиртовий або водяний рівень
magnetic bubble memory / magnetic bubble store
A tube / A-tube
transmitting-receiving tube (TR tube)
cross-level bubble
longitudinal-level bubble
elevating bubble
bubble of level
bubble spirit glass
double-bubble fuselage
air bubble
acoustic bubble submarine imitator
air bubble craft / vehicle
box bubble
bubble
bubble and scale
bubble house
bubble housing
bubble sight
bubble-spirit glass
captured air bubble
captured-air-bubble ship
fluid level bubble assembly
level the bubble
magnetic bubble
magnetic bubble domain memory
magnetic bubble support circuits
magnetic bubble technology
security bubble
transverse bubble
bubble canopy
cathode ray tube (CRT)
disposable tube