Mehods and issues to be concerned in the strengthening of the slag layer in the top of the frame column with high strength fine stone concrete and steel plate hoop.
对框架柱顶夹渣层用高强细石混凝土粘钢板套箍等方法加固，提出了具体的加固方法和注意事项。
A lengthened locating plate is arranged at the back of a backboard, and the backboard can not be pressed to ensure that the basketball hoop plane can keep vertical to the backboard forever.
在篮板后设加长定位板，篮板不会压溃，可使篮圈平面与篮板永远保持垂直。
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。
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