roundhead bolt,snap head bolt,button head bolt,case bolt

同义词释义

1)round-head bolt,snap head bolt,button head bolt,case bolt,圆头螺栓2)cup square neck bolt,杯形方颈圆头螺栓3)Round head,圆头4)round headed sperm,圆头精子5)round-nosed steel projectile,圆头钢弹6)globular model,圆头形