initiators and pyrotechnics

• 火工品

initiators and pyrotechnics的用法和样例：

例句

1. At the same time it was found that the pyrotechnics had defects when used in the valves, thus the pyrotechnics design was improved.
   同时发现了火工品在电爆活门中使用的不足之处，改进了火工品设计。