[船] 吊艇架额定负荷 boat davit: 吊艇杆; 吊艇架; 小艇吊架boat-davit: 吊艇杆life boat davit: 救生艇吊柱outreach of boat davit: 吊艇架跨距suez canal boat davit: 运河船用克令吊下载手机词典可随时随地查词查翻译