The phrase "against ground" is not commonly used in written English and may not be considered correct in most contexts.
It could potentially be used in specific contexts related to physical positioning or comparison, but it is not standard.
Example: "The athlete pushed against ground to gain momentum for the jump."
Alternatives: "against the earth" or "in opposition to the ground".
It was first used against ground troops in the Battle of the Bulge (1944).
Everywhere it is fighting against ground forces backed by air power, which means that it suffers heavy casualties while opposing troops are unscathed.
Those missiles are in a class of weapons described as "standoff," meaning they can be launched from a safe distance against ground targets.
When a G.F.C.I. is the first outlet of a series of outlets wired together, it will protect against ground faults in the other outlets.
Both of these weapons, as well as their successors (such as the Soviets' Nikitin-Sokolov-Volkov, or NSV, machine gun), were used by infantry units on wheeled or tripod mounts, but they were also mounted on tanks to provide defensive fire against ground vehicles or aircraft.
Heavily armoured for protection against ground fire and defended by a gunner in the rear of the two-seat cabin, the Il-2 could fly at up to 450 km (280 miles) per hour at treetop level and was able to attack ground targets with cannons, bombs, and rockets.
Fig. 3 Estimated number of targets against ground truth.
It is now finishing preliminary tests that calibrate it against ground-based sensors.
Arsene Wenger has revealed he is against ground-sharing the Emirates, the stadium that Arsenal "suffered" to build, with Tottenham The Arsenal manager was expressing his views amid speculation over where Tottenham will play while their own stadium, White Hart Lane, is redeveloped.
This should be kept in mind when comparing link-based community detection results against ground-truth communities.
The GOME-2 data in general underestimate the total ozone by around 1% compared with the merged GOME and SCIAMACHY dataset; this result is in agreement with GOME-2 validation against ground-based measurements [31].
