冠内附着体 intracoronal precision attachments ; intracoronal attachment
冠内冠外精密附着体 Intracoronal and Extracoronal Precision Attachments
ERA冠内覆盖附着体 ERA crown cover attachment
目的：临床观察era冠内覆盖附着体基牙的远期效果，确定ERA冠内覆盖附着体基牙选择的范围。
Objective: to observe ERA crown cover attachment of the long-term effects of teeth to determine ERA crown cover attachment abutment the scope of choice.
小孢子壁形成时开始在绒毡层内切线壁出现的球状体到花粉粒成熟时仍有一部分附着于花粉粒表面。
The ubisch bodies which appeared on the inner tangential wall of the tapetum at the time of microspore wall formation are partially remain on the surface of matured pollen grain.
阴性部件的安装角度与就位道相差7度范围内时，附着体仍可正常使用。
Negative components and the installation Angle difference Road in place within 7 degrees, the attachment can use.
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