Mots-clés
spur gear
worm and worm wheel gears
terms of gears
gear boxes
herringbone gears
reverted gear train
bevel gears
simple and compound gear trains
rack and pinion gears
epicyclic gear train
gear drives
helical spiral gear
gear trains
circuit breakers
earthing
electricity
electric shock
safety
precautions
electric
fuse
wire
mcb
electronics
vlsi
nanotechnology
spacecraft failure
mars
spacecraft
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