Which of the following is“锥头铆钉”?
A.crosshead rivet
B.truss-head rivet
C.cup head rivet
D.cone-head rivet
正确答案是D
Which of the following is“锥头铆钉”?
A.crosshead rivet
B.truss-head rivet
C.cup head rivet
D.cone-head rivet
正确答案是D