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At that tail of the warhead, the drag armour-piercing firebomb is filled with a drag agent and a fireagent, Under the pressure of propellant propelling warhead, it will spontaneously ignite to produce open flame, So it can break through the oil drum and ignite or detonate the gasoline. However, the old-fashioned traced armour-piercing firebombs have obvious trajectories due to traced light when they are launched. Therefore, it is very easy to expose oneself while pointing targets to friendly forces. Therefore, the new tracer armour-piercing firebombs now equipped all start to burn and emit light only after the projectile flies out of the muzzle for a certain distance (the generally set safe distance is 100 meters, which makes it impossible for the enemy to judge the firing position with tracer ammunition, while targets within 100 meters do not need to be indicated by tracer), The principle is generally to ignite the tracer and combustion agent carried by the projectile by accumulating the heat generated by the warhead's friction with the air after flying for a certain distance to a certain extent.如果不解开这个疑惑，李越恐怕今晚连觉都睡不着了，好在这一章之后，还有几章。第六季确定为最终季。吴琳琳从小就喜欢看武侠，但是对千篇一律的旧式武侠真得厌倦了，而就在这时，天启横空出世。15.2 Any eye with near visual acuity less than 1.0 is not qualified.校花黄梓晨在惩恶整蛊直播节目中揭露一家地沟油火锅店，却被同校的李默森无意中搅局，遂认定李默森参与黑店生意、助纣为虐。