A circular hoop sheet is punched with a spiral line, and one end of the spiral line penetrates through the connecting piece to contact a bottom plate to engage with the screw.
圆形箍片冲制有螺线一端穿过连接件贴靠在底平面并与螺钉相啮合。
Harry gazed at the circular patch of dusty floor enclosed by his hoop and tried hard to think of nothing else.
哈利凝视着他的木圈里那块灰扑扑的圆形地面，努力不去想其他事情。
Harry gazed at the circular patch of dusty floor enclosed by his hoop and tried hard to think of nothing else.
哈利凝视着他的木圈里那块灰扑扑的圆形地面，努力不去想其他事情。
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