“slotted head”造句，怎麼用slotted head造句

1、a fastener with a tapered threaded shank and a slotted head.

3、screw nail pointed with slotted heads, of iron or steel

2、a threaded fastener used either with a nut or with a tapped hole; slotted head can be driven by a screwdriver.

4、nail of iron or steel (excl. copper-headed nails, pointed screw nails with slotted heads and unpointed screw nails)