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.
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研发人员分布呈现出明显的行业和地域特征。，这一点在heLLoword翻译官方下载中也有详细论述
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