齿形样板,牙块
According to the tooth thickness taper of evolute internal spline taper spindle in tooth, calculate the tailstock block-up thickness of the gear grinding machine, determine the grinding wheel angle of the gear grinding machine, and process the evolute taper spindle.
根据渐开线花键锥度芯轴在齿向的齿厚锥度计算磨齿机尾架垫高厚度,确定磨齿机砂轮角度,加工出渐开线锥度芯轴。
The crista infrazygomatica is a arc structure, suggesting that maxillary third molar tooth and second molar tooth should be a marker for block anesthesia of naterior palatine nerve through sphenopalatine foramen.
颧下嵴为一弧形结构,提示临床经腭大孔进行腭前神经阻滞麻醉时,应以上颌第二磨牙和第三磨牙为标志;
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