The phrase "at minimum speed" is correct and usable in written English.
It can be used when referring to the lowest speed at which something can operate or function effectively.
Example: "The vehicle must maintain at minimum speed to ensure safety during the test."
Alternatives: "at the lowest speed" or "at the least speed".
They blazed like searchlights in the mist; I could see more without them but the ground was twenty feet beneath me, I was at minimum speed and dared not bend to turn them off.
Evans, who was Thornhill's arranger, described the band's sound: "Everything melody, harmony, rhythm was moving at minimum speed.
The birds were walked at a minimum speed of 0.28 m s−1 and at increments of 0.14 m s−1 up to the maximum that they could sustain for steady readings (>3 min).
Lord Carter wants to spend £200m ($330m) to ensure that everyone in Britain has access to the internet at a minimum speed of 2 megabits per second (Mbps) by 2012.In this section Turf wars in black tie Auntie stumbling?
Cars and taxicabs move at a minimum speed of 20 m/s and a maximum speed of 30 m/s, and pedestrians move at 2 m/s.
Candidates are required to transmit by using a Morse key for five consecutive minutes at the minimum speed of five words per minute.
By 1925, the Portuguese military expected horses to "cover 40 km over uneven terrain at a minimum speed of 10 km/h, and to gallop a flat course of 8 km at a mimimum speed of 800 metres per minute carrying a weight of at least 70 kg", and the Spanish military had similar standards.
The experimental design consisted of two training sessions (day 1 and 2) in which the number of trials required to learn to remain on the rod during 180 sec at the minimum speed (4 rpm) was recorded.
As described previously, mice were acclimatized to the apparatus at the minimum speed of 4 rpm for 20 seconds during each trial.
For those patients who were unable to perform this test (eg dependence on a walking aid, or being unable to walk at a minimum speed of 2 miles an hour), a submaximal bicycle ergometer (Tunturi E6) and T-WARE ® software (Tunturi Ltd ,Turku, Finland) were used to estimate VO2max.
The points reached after t r at maximum and minimum speed are estimated in each possible direction of movement.
