在20世纪60年代以前,坦克是按战斗全重和火炮口径来划分的,一般分为轻型、中型和重型坦克。轻型坦克的战斗全重为10～20吨,中型为20～40吨,重型为40～60吨。60年代以后,出现了主战坦克,中型和重型坦克的界限消失,于是,多数国家按用途将坦克分为主战坦克和特种坦克。 Before the 1960s, the tanks were classified according to the weight of the battle and the caliber of the artillery, and were generally divided into light, medium and heavy tanks. Light tank combat weight 10 to 20 tons, medium-sized 20 to 40 tons, heavy-duty 40 to 60 tons. After the 1960s, main battle tanks emerged, and the boundaries between medium and heavy-duty tanks disappeared. As a result, most countries divided the tanks into main battle tanks and special tanks according to their purposes.