inside fillet weld

例句：

1. 1. The engineer used a special toolto perform the inside fillet weldon the pipe.
   工程师使用一种特殊工具对管道进行内部填充焊接。
2. 2. The construction crewwas tasked with installing the inside fillet welds for the new bridge.
   施工队负责安装新桥的内填焊。
3. 3. The quality of the inside filletweld is crucial in ensuring the structuralintegrity of the building.
   内填焊的质量对于确保建筑物的结构完整性至关重要。