On this basis, according to the needs of cross-department collaboration for Group post-sales service, service management system core functions and key processes is elaborated.
在此基础上，根据宏天集团对于售后服务工作跨部门协作的需求，详细阐述了售后服务管理系统的核心功能和主要流程。
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。
Stable retention is one of the most important factors in the use of fiber post and resin core system. Many scholars have researched into factors which might affect the retention of this system.
纤维树脂桩核成功应用于临床的重要保证之一是可靠的固位，因此，学者们对纤维树脂桩核的固位进行了大量的研究。
This article reviews studies published recently about the retention of fiber post and resin core system.
本文就近年来有关纤维树脂桩核固位的研究作一综述。
This article reviews studies published recently about the retention of fiber post and resin core system.
本文就近年来有关纤维树脂桩核固位的研究作一综述。
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