The analysis of ups and downs of Iridium Satellite system's business plans testifies the validity and maneuverability of business platform model.
用商业平台模型解析铱星系统商业计划的沉浮，证明了它的有效性和可操作性。
Objective To assess the clinical value of the fiberoptic bronchoscope (FOB) -guided three-stage intubation technique in children and observe its maneuverability and clinical validity.
目的评价小儿光导纤维支气管镜(FOB)引导三步气管插管技术的可操作性和临床应用价值。
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