The longitudinal stability of a ground effect craft is analyzed in the ocean wave environment.
以某型地效飞机为例，讨论了地效飞机在海浪环境下纵向稳定性的研究方法。
Objective To observe the reservation effect of longitudinal fractures of posterior teeth.
目的：观察后牙纵折保留治疗疗效。
Objective To observe the reservation effect of longitudinal fractures of posterior teeth.
目的：观察后牙纵折保留治疗疗效。
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