The head center of the soldering iron head is provided with a centering pin positioned at the center point of the circular ring circle and rising a little altitude than the circular ring plane.

在所述烙铁头的头部中心有一定心针，该定心针位于圆环的圆心处，高度略微高出圆环平面。

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Ring hammer can not only with the rotor rotating, still can rotate around the hammer pin.

环锤不仅能随转子旋转，还能绕锤销自转。

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Usually there are 12 categories which are bolt , stud, screw, nut , self tapping screw, wood screw, gasket, retainer ring, pin, composite member, bolting, and soldering lamp.

它通常包括以下十二类零件：螺栓、螺柱、螺钉、螺母、自攻螺钉、木螺钉、垫圈、挡圈、销、组合件和连接副、焊钉等。

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The Ardnamurchan Viking was found buried with an axe, a sword with a decorated hilt, a spear, a shield boss and a bronze ring pin.

BBC: Museums could bid for Ardnamurchan Viking finds

Other finds in the 5m-long (16ft) grave in Ardnamurchan included a knife, what could be the tip of a bronze drinking horn, a whetstone from Norway, a ring pin from Ireland and Viking pottery.

BBC: Museums could bid for Ardnamurchan Viking finds

Once the devices and video footage were collected by other members of the fraud ring, the complaint says, they were delivered to Gabor and Pintillie who downloaded the information with corresponding pin numbers from the footage.

FORBES: Crooks Secretly Filmed Customers' ATM Transactions To Steal $3M From Bank Accounts: NY AG