keel boat

WW realized that the boat had lost its keel.

我们发现船的龙骨掉了。

The FRP/ concrete board can be applied in the keel and the rib of the boat;

FRP/混凝土复合梁可以应用于玻璃钢渔船龙骨和肋骨；

Any of various slim, elongated fishes of the family Syngnathidae, living in temperate and warm seas and characterized by a tubelike snout and an external covering of bony plates. The keel of the boat was made of steel.

海龙，杨枝鱼一种细长的海龙科鱼，生活在温暖平静的海域，长有其管状鼻和骨盘的表面覆盖物这船的龙骨是钢制的。

And the connection strength of the bilge keel of FRP fishing boat was obtained based on the ripping tests of 4 FRP frames.

并根据4种玻璃钢骨架的剥离试验数据，计算出玻璃钢渔船舭龙骨的连接强度。

The keel of the boat was made of steel.

这船的龙骨是钢制的.