The thesis mainly deals with the structure and working principle of hand tool which makes use of a tractor as its power.

介绍一种以拖拉机为动力源的手持工具的结构和工作原理。

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Collapsible Coiler - Rotates on Large Ball Bearings? Power Drive Assembly or Hand Operated? Large Heavy Duty Casters? Floor Lock Brakes? Guide ring? Tool and Tag Tray.

可折叠，绕在大滚珠轴承上？电力驱动或手动？重型大脚轮？地面锁制动器？导向环？工具和配件存储盘。

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Meanwhile, the surface of the hand-holding power tool is smooth and clean, the tensile strength is high, electric insulation is safer, and the use life is long.

同时本发明手持式电动工具表面光滑亮洁，抗强度高，耐电绝缘性能更安全，使用寿命长。

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And now Costco will carry hand tools, power tools and tool storage units at all its 430 stores.

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Through the piece's advanced gesture recognition technology, wielders of this powerful tool can put the power of 39 commands in the palm of their hand.

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In particular, Neanderthals wielded their tools in a so-called power grip held in the palm of the hand with the fingers curled around the body of the tool.

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