longitudinal framing system,longitudinal system of framing

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.

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。

The article presents the work on reducing ship hull structure weight through careful consideration on frame spacing and longitudinal spacing, resulting in optimun combination of frame spacing and longitudinal spacing for the air cushion vehicle under designing.

本文以减轻船体结构重量为目标 ,通过改变全垫升气垫船浮箱的肋距与纵骨间距 ,从而确定优化的肋距与纵骨间距组