The enamel surface microhardness was measured by a Leitzs microhardness tester.
采用维氏显微硬度仪测定经饮料浸泡后牙釉质表面显微硬度的变化。
The surface microhardness was substantially increased compared with the untreated.
表面显微硬度较未处理的样品明显提高。
The surface microhardness increases and the grain sizes in nanocrystalline surface de…
随着高能喷丸时间的增加 ，表面层的晶粒尺寸变小 ，而表面硬度提高。
After ultrasonic impact, the surface microhardness and the section microhardness are obviously increased.
冲击后接头的表面和断面显微硬度均得到了提高。
The high frequency induction hardening can't raise the surface microhardness of the cold precision forging spur gear.
高频感应淬火不能达到硬化冷精锻直齿圆柱齿轮齿面的目的。
Objective This in vitro study quantitatively assessed the effect of frequency and time span of immersion of human teeth in acidic soft drinks on enamel surface microhardness.
目的本实验用显微硬度测量法，定量研究和评估人离体牙釉质在酸性饮料中的硬度变化，比较牙釉质在饮料中浸泡时间及浸泡频率对釉质表面硬度的影响。
Objective This in vitro study quantitatively assessed the effect of frequency and time span of immersion of human teeth in acidic soft drinks on enamel surface microhardness.
目的本实验用显微硬度测量法，定量研究和评估人离体牙釉质在酸性饮料中的硬度变化，比较牙釉质在饮料中浸泡时间及浸泡频率对釉质表面硬度的影响。
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