downward fired造句

• For a downward firing vertical Square-type FP shutter, the top of the image leans forward.
• The downward firing ejection seat was placed in the forward seat in place of the gunner's station.
• Two defensive positions were added; an upper dorsal turret, and a ( retractable ) ventral turret to enable downward firing.
• Entry was by ladder to a door about from the base above which was a machicolated ( slotted ) platform which allowed for downward fire on attackers.
• I made a ported ( reflex ) sub-woofer with a vertically upward firing drive unit and a vertically downward firing port for bass instrument reproduction.
• The fuselage was covered with thin plywood panelling and housed the crew of two in a single cockpit, with the observer's 7.92 mm ( . 312 in ) machine gun being mounted on an elevated gun ring, giving a good field of fire, allowing downwards fire at targets on the ground.
• Between 7 October and 21 October 1953, nine tests were conducted of the downward firing ejection seat of the Boeing B-47 Stratojet by the Air Proving Ground, utilizing a TB-47B ( a modified B-47B ) from the Wright Air Development Center, Wright-Patterson AFB, Ohio, at an altitude of 10, 000 feet and various speeds.