介绍了超强磁破甲弹磁头装置的工作原理。

The operating principle of the magnetic head of the super-strong armour-piercing projectile is introduced.

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说明大口径破甲弹致动物损伤严重，死亡率高，受伤器官多，致伤因素复杂。

Large armour piercing projectile can produce serious injuries to the animals, the death rate is high, many organs can be injured, and the injurious factors are complicated.

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使用基准破甲弹对等厚不同强度钢的靶板进行静破甲，得到形状相似的弹坑。

Used the norm penetration case, the quietly penetration has been done to the steel target plank which is equal thickness but different intensity, and the similar form craters ware be obtained.

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Please choose a rhythm for excerpt one you can choose rhythm A which is or you could choose rhythm B So I'm about to play a piece. It's by Chopin.

请选一个和你听到的相符的节奏,你可以选节奏甲,也可以选节奏乙,我现在要弹一段,肖邦的曲子

耶鲁公开课 - 聆听音乐课程节选