The car has a maximum speed of 120 kilometres an hour.

这车全速每小时120公里。

《新英汉大辞典》

The carbon-fiber aircraft reached a maximum speed of 68 knots (groundspeed).

碳纤维飞机达到了68节（地面速度）的最大速度。

youdao

The 15 minute sub-orbital flight achieved an altitude of 116 miles and a maximum speed of 5, 134 miles per hour.

这次15分钟的亚轨道飞行达到了海拔116英里的高度，最大速度为每小时5134英里。

youdao

In high-speed continuous mode, the camera can shoot at a maximum speed of up to 30 fps.

ENGADGET: Olympus introduces Stylus SP-820UZ, SP-720UZ cameras and SZ-14 binocular bundle

The vehicles, made of lightweight composites, have a maximum speed of 50mph and a range of more than 200 miles.

BBC: Hugo Spowers with hydrogen-powered car

The F12 has a maximum speed of 211 mph.

FORBES: 2013 Ferrari F12 Berlinetta : Precious Metal