用动态热电偶法测量齿面闪温分布,设计制造可测出全齿面闪温的三片组合带电阻式齿轮结构。
Surface temperature on gear teeth was measured by dynamic thermocouple method. A test gear construction consisting of three pieces and electric resistance was designed.
通过400例下第三磨牙的X 线片观察,分析了阻生齿的阻生类型,阻生类型与阻生齿并发症的关系。
The X-ray photographs of 400 cases of mandbular impacted third molar were observed and the impacted molar types and relations between impacted types and complications of impacted tooth were analysed.
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