A mortar and pestle was first used to pulverize the granules of Ignition Powder.
迫击炮和杵首次用来粉碎的颗粒点火粉末。
When the mass ratio of B/KNO3 keeps constant, the ignition powder 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。
There may still be some ignition or explosive powder left in them.
因为可能放过之后还是会有一些能够点燃或会爆炸的粉末存在。
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