火药燃烧后留下的细微颗粒,常作为法医证据,表明某人接触过或开过枪。
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火药燃烧后留下的细微颗粒,常作为法医证据,表明某人接触过或开过枪。
The fine particles left behind after gunpowder is burned, often used as forensic evidence to indicate a person handled or fired a gun.
The police found gunpowder residue on his hands.
警方在他的手上发现了火药残留物。
火药燃烧后留下的细微颗粒,常作为法医证据,表明某人接触过或开过枪。
The fine particles left behind after gunpowder is burned, often used as forensic evidence to indicate a person handled or fired a gun.
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