Well there is this initial impedance from explosion, sure the cannon ball can keep going horizontally but as soon that impedance goes it store its natural motion which is downward.
在发射的最初阶段会产生一个阻力，使得炮弹可以保持水平飞行，很快阻力就消失了，自然力使得它向下运动。
The dynamics mathematics model of cannon stable system has been established on the base of the cannon motion kinematics , dynamics principle and deduction on motion carrier;
根据运动载体上火炮运动的特点，建立了火炮稳定系统的动力学模型；
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