root and post-core system
root and post-core system
根和后核系统
以上为机器翻译结果，长、整句建议使用 人工翻译 。
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Objective:To introduce a new prefabricated post-and -core system, a helical drilling bit and a prefabricated post-and -core consisting of a root canal orifice bur which was designed by the author.
目的：介绍一种由螺旋型根管钻、自行设计的根管口台阶状车针、预成桩核组成的预成桩核系统。
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