CLOSE COMBAT IV 近距离作战IV
In August 2003, the Fire Scout was selected as the Class IV UAS for the Army's Future Combat Systems.
“火力侦察兵”无人机于2003年8月被选为美国陆军未来作战系统的4级无人机系统。
The M3 Lee and Grant tanks, mounting a 75mm fixed gun, had a high silhouette and was difficult to operate in combat with the heavy German PZKPFW Mark IV and Tiger panzers.
M3‘李’式和‘格兰特’式坦克，装备有75毫米固定主炮，有高大的侧面轮廓，在战斗行动中难以与德国重型的‘马克’IV型坦克和虎式坦克相匹敌。
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