接防 meaning in English

relieve a garrison; relieve; take over the defense
◇接防部队 relieving unit

（ detachable serrated nozzle , water flow control outlet attachable ）
可拆卸水嘴，可加接防溅起泡器。
In this paper , for the bonding between the sling screw - thread - based and composite hull based on the underwater weapon composite , the bonding structure design , process design and leakproof technology between the load - bearing metal parts and composite hull are studied . with the further investigation on tensile test of the sling screw - thread - based the common technology of bonding between load - bearing metal parts and composite hull is obtained , which establishes the experiment and theory base for the technology of underwater and deepwater weapon in china
本文以水下兵器为背景，以某型号雷体吊耳螺纹座与复合材料壳体的胶接为研究对象，着重进行了金属承力件与复合材料壳体的胶接结构设计、工艺设计、胶接防渗技术的研究，并进行吊耳螺纹座拉力试验研究，最终获取了水下兵器用金属承力件与复合材料壳体连接形式的共性技术。