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这是一对用低炭钢或黄铜制成的、带槽的楔铁。它在把夹盘、钻套和其它带锥柄的工具(图1),从连接状态拆开时是非常有用的。
This is a pair of grooved wedge iron made of low carbon steel or brass. It is very useful when removing the chuck, drill collar and other tools with taper (Figure 1) from the connected state.