propeller emergence
常见例句
- Ship propeller emergence of the ship propulsion technology a major step forward, but also on the boat force a major reform, it is actually the original form of the ship.
桨轮船的出现，是船舶推进技术的一个重大进步，也是对船行动力的一次重大改革，它其实就是原始形态的轮船。 返回 propeller emergence