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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.《真正男子汉第二季》是由中国人民解放军八一电影制片厂和湖南卫视联合推出的大型的国防教育特别节目。节目记录8位有年龄跨度，性格标签各异的明星，深入一线部队，改变身份，在不同军兵种经历4次5天4晚的真实军营体验，与年轻的部队战士同吃同住同训练。[1] 第二季正式加入女兵环节。　　浩宇历尽周折让“雨宁”明白真相爱上了自己，不料却发现她不过是个替身。深陷痛苦的浩宇将计就计，利用红玉反击宫家，红玉夹在两个男人复杂的爱与恨之间受尽磨难。最终少华幡然醒悟以命赎罪，红玉与浩宇的爱情起死回生。经历过　　《玛嘉烈与大卫》的故事继续发展之前，先乘坐时光机，回到过去，看看玛嘉烈和大卫在遇上对方之前，爱了什么人、害了什么人、撒过什么谎、躺在谁的怀里...本片讲述卡特里娜飓风期间，在美国新奥尔良州的第九区低地发生的一宗抢劫案。