Double concentric cylindrical shell with solid floor and added longitudinals on the pressure tank shell is a very good structural form of new pressure tank.
youdao
2. 有些船舶在不同的船龄阶段，在船体结构上出现疲劳裂纹，特别是在船底、舷侧纵骨中较为突出。
Endurance cracks may appear in the hull structure at different ship-ages for some ships, especially at the vessel bottom and the longitudinal bone on board side.
youdao
3. 目的应用黏接再植术及牙周翻瓣植骨术对后牙冠根纵折伴牙周脓肿手术治疗的疗效进行评价。
Objective To evaluate the clinical effect of bonding and surgical therapy on fractured crown-root complicated with periodontal abscess.
youdao
4. 目的应用黏接再植术及牙周翻瓣植骨术对后牙冠根纵折伴牙周脓肿手术治疗的疗效进行评价。
Objective To evaluate the clinical effect of bonding and surgical therapy on fractured crown-root complicated with periodontal abscess.
