対たい戦せん車しゃ兵へい器き

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Meanings

1

noun

anti-tank weapon

Military term for weapons designed to destroy tanks and armored vehicles.

vis-a-vis, opposite, even

戦war, battle, match

兵soldier, private, troops

器utensil, vessel, receptacle

対たい戦せん車しゃミサイル
Specifically an anti-tank guided missile, while 対戦車兵器 is a broader term covering all anti-tank weapons.
対たい戦せん車しゃ砲ほう
Refers to anti-tank guns or cannons, a subset of 対戦車兵器.

Compound of 対 (anti-), 戦車 (tank), and 兵器 (weapon).