Obturation technique to treat hemorrhea following pelvic fracture .

填塞技术治疗骨盆骨折大出血。

Summary : the purpose of root canal preparation is complete removal of necrotic tissue , bacteria and byproducts , dentin debris , and the establishment of an ideal shape for obturation of the root canal system .

提要：根管预备目的是通过根管清理彻底去除根管内坏死组织、细菌及其代谢产物、牙本质碎屑，并为根管严密充填建立理想形态。

With the rapid improvement of technical desires for aerodynamic missile system , many abuses of the test system architecture in present such as obturation of communication , waste of resource , inconveniences of manipulation have emerged gradually in applications .

随着导弹武器系统总体技术要求的提高，现行的集中模式测试系统体制已逐步暴露出信息封闭、资源浪费、操作不便利等弊端。