slotted countersunk flat head screw

例句：

1. 1.The carpenter used a slotted countersunk flat head screw to fasten the wooden planks together.
   木匠使用槽式沉头平头螺丝将木板固定在一起。
2. 2. The construction workers replaced the old screws with new slotted countersunk flat head screws for better strength and durability.
   建筑工人用新的槽式沉头平头螺丝替换旧的螺丝，以增强强度和耐久性。
3. 3. The engineer designed the machine with special consideration for the need for precision in assembly, using slotted countersunkflat head screws for optimal fit.
   工程师在设计机器时特别考虑了装配过程中对精度的需求，使用了槽式沉头平头螺丝以确保最佳配合。