And, if a robot arm were to swing out towards you, for safety reasons you would want to be able to immediately stop it and push it back without harming yourself, reverse that motion instantly. For one thing, that requires a back-driveable actuator.
1 primary, but 51 alt picks. Still well-known
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The US economy is growing - so where are all the jobs?
Трамп высказался о непростом решении по Ирану09:14