premoulded joint

例句：

1. 1.The engineer used a special tool to premould the joint before welding it together.
   工程师使用特殊工具在焊接之前预成型接头。
2. 2. The premoulded joints were strong enough to withstand the weight of the car.
   预成型接头足够坚固，能够承受汽车的重量。
3. 3.The manufacturer claims that their premoulded joints are more durable than traditional ones.
   制造商声称他们的预成型接头比传统接头更耐用。