短语词组短语Bulkhead Union Elbow 舱壁联盟弯头bulkhead union -body 卡套式隔壁直通接头体bulkhead union elbow -assembly 卡套式隔壁直角管接头;详细翻译Flared couplings - Bulkhead union 扩口式过板直通管接头 返回 bulkhead union