A percussion cap.

• 雷管

A percussion cap.的用法和样例：

例句

1. A detonator is used to trigger an explosive device.
   雷管用来引爆爆炸装置。
2. His attempts to find a safe way to handle nitroglycerin resulted in the invention of dynamite and the blasting cap.
   他试图找到一种处理硝化甘油的安全方法，结果发明了黄色炸药和雷管。