topmast hounding上桅桅肩;中桅桅肩
topmast shroud中桅侧支索
fore topmast前顶桅
topmast band中桅箍
topmast staysail顶桅支索帆
main topmast主中桅;主中桅杆
N(名词) the mast next above a lower mast on a sailing vessel 中桅