1.
1. 厚层切底:boss hammer 大锤 | bossing 厚层切底 | bottle coal 瓦斯煤
2. 艉膨出部:舱底铺板 bottom ceiling | 艉膨出部 bossing | 前桅支索 bore rigging
3. 轴毂轴包架轴包套导流帽:bossing 船尾管鼓出部 | bossing 轴毂轴包架轴包套导流帽 | bosum 水手长
4. 船尾管鼓出部:bossing both-way communication 双向通信 | bossing 船尾管鼓出部 | bossing 轴毂轴包架轴包套导流帽