cannonballs

How many times must the cannonballs fly .

炮火要横飞多久。

Yes and how many times must cannonballs fly , before they 're forever banned ?

炮弹要掠过天空多少回，它们才被永远禁用？

And they work very well for billiard balls and cannonballs and gravity .

不论是台球、炮弹，重力，它都能解释的很好。

Naval gunners as far back as the 18th century bounced cannonballs as a military tactic .

上溯到18世纪，海军炮手将炮弹弹跳作为一种军事战术。

' Thus for steel cannonballs , skipping can only occur for angles shallower than seven degrees . '

因此，对于钢制炮弹而言，只有投掷角度小于7时才有可能产生弹跳。

Using t. coli DNA polymerase I , E. reliability design of the allowable unloading torque of the fuze installed in the bottom of cannonballs

弹底引信许用旋卸扭矩的可靠性设计

In war , the oil box of a tank or armored vehicle would be fired and exploded when it was attacked by cannonballs . The explosion can lead to a more serious injury , even fatal injury .

在战争中，坦克或装甲车在受到弹头的猛烈撞击后，很有可能再次引起油箱起火或弹药爆炸等情况，再次的爆炸可能会造成更大的伤害，甚至是致命的伤害。