德宝硬度仪

　　通线器沿40—60度角在硬度测量模板的水平线上划过，地表的硬度可以通过划痕深浅及交叉点破损情况判定。
　　Draw the tester along the slot of the template so that the point create a score on the floor surface.The result of the subfloor hardness can be concluded by the depth of the marking and cracked junction。

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