单词：percussion cap
[化] 火帽
percussion cap的用法和样例：
例句
- 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。
- We shall start the two blocks from rest at the center point of the track and force them apart by exploding the cap with an electric spark.开始时，将两个滑块静止置放在槽的中心，然后利用电火花引爆雷管，迫使它们分开。
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