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- The surface microhardness of sample A is higher than that of sample B and the carburized layer of sample A is thi. 表面显微硬度比较发现,试样A的硬度明显高于试样B,在光学显微镜下观察两试样的截面,试样A渗碳层的厚度明显大于试样B。
- 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。
- And the calcium in the vinegar were analyzed by EL 312e microplate.The enamel surface microhardness was measured by a microhardness tester. 采用维氏显微硬度仪测定经食醋涂擦后乳牙牙釉质表面显微硬度的变化。
- The carburizing quenching can raise the surface microhardness of gear, but the carburized layer thickness of tooth root is too thick to worsen the quality of gear. 渗碳淬火可以提高轮齿表层的显微硬度，但齿根渗碳层厚度较大，对齿轮质量不利；
- Results The vinegar had demineralizing effect on deciduous enamel and decreased the surface microhardness of deciduous enamel.Conclusion The vinegar may have erosive effect on deciduous enamel. 结果 食醋能导致乳牙牙釉质钙溶出和表面显微硬度下降，随时间延长钙溶出减少，表面显微硬度降低的程度减弱。
- STUDY ON THE CHARACTERISTIC OF THE SURFACE MICROHARDNESS FOR 45 STEEL DURING HIGH CYCLE FATIGUE 高周疲劳过程中45钢表面显微硬度变化规律的研究
- Keywords Soft drinks;Young permanent teeth;Enamel;Surface microhardness;Demineralization; 饮料;年轻恒牙;牙釉质;表面显微硬度;脱矿;
- Keywords ion implantation;LY12 duralumin;surface microhardness;strengthened mechanism; 离子注入;LY12硬国铝合金;表面显微硬度;强化机制;
- The gas bubbled to the surface of the water. 气体变成气泡升上水面。
- The surface of the liquid gradually crusted over. 液体表面渐渐地结了一层皮。
- A breeze ruffled the surface of the lake. 一阵微风吹皱了湖面。
- A wave broke across the surface of the pool. 一个波浪从池水表面掠过。
- The calm water surface is very much like a mirror. 那平静的水面十分象一面镜子。
- Acid had pitted the surface of the silver. 酸把银器的表面腐蚀了。
- He is honest only on the surface. 他只是表面诚实而已。
- A film of mucus and bacteria on a tooth surface. 齿菌斑牙齿表面一层粘液和细菌的膜
- The hard outer portion or surface area of bread. 面包皮面包的表面区域的硬皮
- Surface mail takes longer than airmail. 普通邮件比航空邮件慢。
- The surface of the lake is quite still. 湖面相当平静。
- It's2 yuan by surface mail and3.6 yuan by air. 寄平信2元，寄航空要3元6角。
