变化程度不一，有些区域仅有微小的改变，而另一些区域却变化明显。 硬度是牙体组织重要的物理性能之一,牙体硬组织的显微硬度值(Microhardness Number ,MHN) 能反映矿物质的含量,MHN 的变化可反映牙体矿物质的获得和丢失,故MHN 测定已成为研究牙体硬组织
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目的观察不同浓度氟泡沫对脱矿牙釉质表面显微硬度值的影响。
Objective To investigate the influence of fluoride foam of different concentration on microhardness of demineralized enamel surface.
显微硬度测试表明，对相同成分合金，非晶态的显微硬度值比晶态的低。
The microhardness value of the amorphous alloy is lower than that of the crystalline alloy with the same composition.
从焊缝区到母材，显微硬度值逐渐下降，焊缝区硬度值高出母材约35。
The microhardness declined from the welding line to base metal, and the microhardness of the welding line was about 35 higher than that of base metal.
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