butt-weld joint

例句：

1. 1. The engineer useda butt-weld joint tojoin the two pieces of metal together.
   工程师使用一个但焊接头将两块金属连接在一起。
2. 2. The butt-weld jointwas strong enough to withstand the weightof the car.
   这个但焊接头足够坚固，能够承受汽车的重量。
3. 3. The butt-weld joint was visible through themetal surface, indicating that it had beenproperly installed.
   但焊接头通过金属表面可见，表明它已经被正确安装。