单桅帆船有一个主帆、三角帆和龙骨但没有船首斜桁的单桅小帆船。
A small sloop with a mainsail, jib, and keel but no bowsprit.
“即使在这种压力下，剑角龙骨骼中也只有一些小支柱的骨头才会断裂，而且这些骨骼很容易恢复”他说。
"Even at these forces, only a few struts of bone might break; these would heal easily," he said.
一侧有爪，呈龙骨瓣三角状半圆形。
Claw on one side, showing triangular-shaped semi-circular keel.
本发明涉及一种防洪装备。主要由制式单元防漏尼龙雨布。塑钢三角形龙骨支撑架、龙骨、安全保险杠、重力装置、单元连接锁栓及加固件等组成。
A portable flood control apparatus consists of: uniform leakage-proof nylon fabric units, plastic-steel triangular keel supports, keels, fender-guards, gravity device, connecting bolts and fasteners.
本发明的有益效果是：整个吊顶棚的重量和受力都均匀分散到每个框架上，取消了老式的三角龙骨结构；
The invention has the beneficial effects that the weight and the stress of the whole suspended ceiling are both evenly scattered on each frame and the old triangular keel structure is cancelled;
本发明的有益效果是：整个吊顶棚的重量和受力都均匀分散到每个框架上，取消了老式的三角龙骨结构；
The invention has the beneficial effects that the weight and the stress of the whole suspended ceiling are both evenly scattered on each frame and the old triangular keel structure is cancelled;
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