Few overtly military facilities are on the list, though several sites in Britain are mentioned as being vital to American weapons systems, including BAE Systems plants in three locations where important components are made for the F-35 joint strike fighter and for guided munitions like the AGM-154 Joint Standoff Weapon, which combat pilots can use to strike surface targets dozens of miles away.
Striking surfaces include the hands (particularly the knuckles and the outer edge), ball of the foot, heel, forearm, knee, and elbow.
Glaze, ice coating that forms when supercooled rain, drizzle, or fog drops strike surfaces that have temperatures at or below the freezing point; the accumulated water covers the surface and freezes relatively slowly.
The surface was covered in volcanoes, much of the ground ran with molten magma, and huge rocks struck the surface on a regular basis.
(8) as (9) and struck out "surface" before "transportation research".
Recently a major comet struck the surface of Jupiter.
A similar but somewhat more complex mechanism is recoil sputtering, in which a struck, recoiling surface atom undergoes a random sequence of elastic scatterings in the target material, ultimately migrating back to, and through, the surface.
The waves struck the surface with undulating regularity that continued for the unusually long time of a minute.
While entering the atmosphere on 15 December 1970, the parachute is believed to have partially torn, and the probe struck the surface with a hard, yet not fatal, impact.
Abrasive fragments borne by a stream of liquid or gas may wear down a surface if they strike the surface at high speeds.
