A plane must maintain a minimum speed to generate lift, and the higher it travels, the faster it must go.

所以，飞机必须保持一个最低速度以产生升力，而且飞行的高度越高，飞机维系升力的速度也越高。

youdao

And the method of calculating the proposed two new concept vehicles are put forward: Mitigation Brake should maintain a minimum speed and release time.

提出了两个新概念及计算方法：缓解列车制动时车辆全部缓解后应保持的最低速度及缓解时间。

youdao

Escape velocity is simply the speed of an object that's shot out of a cannon the minimum initial speed so that the object could later escape Earth's gravity on its own.

逃逸速度就是一个物体的速度，比如说，从加农炮中射出的最小初始速度，这样这个物体以后就可以自己脱离地球的引力。

youdao

The aim of the Eco-Marathon is to complete the course using the least fuel possible while maintaining a minimum speed of 15mph.

BBC: Car built by Wiltshire pupils clocks 2,000 mpg

The UK government has pledged to provide broadband running at a minimum speed of 2Mbps (megabits per second) to all homes by 2012.

BBC: UK community groups win free wi-fi

It will mean a minimum speed of 100Mbps (megabits per second) for secondary schools and 10Mbps for primary and special schools by 2014, the Welsh government said.

BBC: Welsh government pledges ?39m for schools broadband