topmast head 中文意思是什麼
topmast head
解釋
上桅頂部-
A platform enclosing the head of each mast of a sailing ship, to which the topmast rigging is attached
桅樓,桅盤帆船上包圍著所有帆頭的平臺,頂桅索具就加結于其上
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