◎ 顶杆 dǐnggān
(1) [mandrel]∶被打入某些物体中的薄壁管(如以后将灌入混凝土的管形钢柱)内的临时内支柱
(2) [ejector rod]∶一种用来顶出已成型工件的棒
(3) [ejector pin]∶穿入[金属]型腔背面的销杆,用以顶出制成件
(4) [tige]∶早期来复枪枪管尾端中的细钢杆,弹丸由推弹杆撞入顶住钢杆并配合来复线塞紧

1.{工} ejector pin; knock-out pin; carrier rod; crown bar; pin-lift; post rod; roof bar; stripping post; top material; mandrel; tige