它是在螺丝刀上装有一可移动的夹持螺丝装置。
On the screwdriver is provided with a mobile apparatus for gripping screw.
为了提高用注塑机生产掌上电脑外壳的生产效率，研制了机械手自动加螺丝装置。
In order to increase production efficiency of PDA cases output on plastic jetting-moulding machine, the auto-loading screw device of robot is developed.
没有螺丝去打开他的装置。
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