1) quadrant davit
弧齿形吊艇柱
2) quadrantal davit
弧齿式吊艇柱
3) welin type
弧齿型吊艇柱
4) quadrant blocks
弧齿形吊艇滑车
5) bar davit
圆形吊艇柱
6) heel of davit
吊艇柱脚
参考词条