• 1. mechanical twin: 机械的双晶 | 形变孪晶 | 机械双晶 | 机械孪晶
• 2. mechanical system with twin-motor drives: 双机传动机械系统

• 1.Roboticist Hiroshi Ishiguro of Osaka University built his own mechanical twin to see how humans react to extraordinarily lifelike machines.
  大阪大学机器人学家石黑浩制造了他自己的机器双胞胎，以考察人们在面对格外逼真的机器时作何反应。
  dict.yoduao.com
• 2.The tower’s main form was a twin helix which spiraled up to 400 m/1312ft in height, where visitors would be transported around with the aid of various mechanical devices.
  这座塔的主要形式由一个双螺旋盘旋至400米/1312英尺高，参观者可借助多种机械设施传至螺旋体各处。
  dict.yoduao.com
• 3.The tower's main form was a twin helix which spiraled up to 400 m/1312ft in height, where visitors would be transported around with the aid of various mechanical devices.
  这座塔的主要形式由一个双螺旋盘旋至400米/1312英尺高，参观者可借助多种机械设施传至螺旋体各处。
  dict.yoduao.com

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