Results the improved calculative method of point-open was more simple in clinical application, with stronger regularity and better clinical therapeutic effect.
结果：改良后的推算开穴法完全运用代数推算，临床应用更加简便，规律性更强，临床疗效更好。
Objective: To measure the angles of zygapophysial joints and to investigate their internal regularity on lumbosacral vertebrae in order to provide the morphological data for clinical application.
目的：探讨腰骶椎关节突关节角的内在变化规律，为临床应用提供形态学依据。
The application of vehicular bump-integrator( PZC-2000) in the regularity inspection of bituminous concrete pavement is introduced, and a case study is presented.
介绍车载式颠簸累积仪（PZC-2000）在沥青混凝土路面平整度检测中的应用。
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