中文字幕专区

The average person dare not say so!绿萝、范依兰和许负也全都静静地陪在一边，甚至连小宁儿也受到感染，安静下来。李天宠眯着眼道，内容是什么？封官。Updated December 13Aban lives for news. He doesn't look for news, and the news will look for him. During the Anti-Japanese War, when the Chinese Air Force mistakenly bombed Nanjing Road, Aban was purchasing from Yongan Company with his assistant Bilinghan. He was sitting in the car, knocked unconscious by the explosion and suffered minor injuries. Bilin Han was seriously injured and almost died in the Yongan Company building. Aban used a whole chapter to describe the situation at that time, from the citizens looking up at the plane to the rescue and rehabilitation after the explosion, such as focus plane, which was meticulous and true. Its first-hand historical value was extremely precious.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.5.2. 6 Requirements for splice board design