It proves that Americans can't play 'ricochet ' well

(2:26)

事实证明，美国人就是玩不好“跳弹”【科学火箭叔】#科普#文化#炸弹

(57)

Why there are two black boxes in one plane ?

(9:9)

10:13Driver on the left or right ? That's not an easy question

(2:2)

Is there a window on the submarine?

(1:24)

What is the purpose of the design of ADM-20?

(1:36)

Which country on earth is the hardest to invade?

(1:41)

Delta 4 series rockets ,burning for a while, then being fired

(1:49)

How did the battleship's gun last forever ?

(1:55)

The secret of submarine , why it gets rounder ?

(6:31)

Submarine deck gun that is not waterproof , why not burst ?

(2:5)

Why most of the decks of Russian warships are red?

(1:41)

Is the Russian Kinzhal a hypersonic missile or not?

(4:56)

当坦克太重，要压垮要过的桥，该怎么办？【科学火箭叔】

(16:13)

都21世纪了，为什么榴弹炮开炮还要拽绳子？是发展武器把它落下了吗？【科学火箭叔】

(58:11)

It is also a road wheel. Why did the German Tiger type in World War II have to be so complicated?

(4:40)

The superb flying skills of the fighting nation: a bomber without a pilot!

(6:35)

Luxury cruise ship were aircraft carriers originally

(1:36)

Will it launch the wrong aircraft carrier?

(1:12)