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。
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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