centerboard

centerboardcenterboardD.J.:[ˈsentəˌbɔ:d]K.K.:[ˈsɛntɚˌbɔrd, -ˌbord]n.1.■(帆船的)活动船板,中插板

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centerboard['sentə,bɔ:d]n.1.■[美国英语]【造船】中插板，中央被水板；防摇板[亦称作 drop keel，参较 dagger-board]

centerboardcenterboard[ˈsentəˌbɔ:d]n.1.■【船】滑动龙骨, 活动防浪板, 垂板龙骨