常見(jiàn)例句雙語(yǔ)例句Upon vehicle impact, a pyrotechnic propellant charge is ignited electrically.車(chē)輛發(fā)生碰撞時(shí)，電子點(diǎn)燃焰火式推進(jìn)劑填料。 返回 pyrotechnic propellant