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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.For recursively scheduled events, the end date cannot be before the start date.也不知伯洲能否护卫越王周全？蒲俊心中暗想，若是自己跟随尹旭身边，不见得能比苏岸好多少。古人学武，只杀敌不表演。金钱、欲望、虚荣的引诱，使她伦丧堕落，走向不归的深渊…… 吉林松花湖畔浮现的一具男性裸尸，揭开了犯罪集团的冰山一角。一次正义与邪恶的殊死较量，在东北大地展开……Validator.add (registerForm.password, 'min Length: 6 ',' Password length cannot be less than 6 bits');