A mortar and pestle was first used to pulverize the granules of IgnitionPowder.
迫击炮和杵首次用来粉碎的颗粒点火粉末。
2
When the mass ratio of B/KNO3 keeps constant, the ignitionpowder adding fluorine rubber binder is less sensitive than that of phenol formaldehyde resin.
而静电感度则降低，当B/KNO3配比一定时，添加相同的粘结剂氟橡胶比添加酚醛树脂更钝感。
3
There may still be some ignition or explosive powder left in them.