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通常国内的飞机滑轨采用高强度合金钢,例如40CrNiMoA,其结构截面形状呈“工”字形,滑轨导动面的公差为0.3~0.4mm。ARJ21飞机上首次使用了钛
Usually the domestic use of high-strength aircraft slide rail alloy, such as 40CrNiMoA, the structure of the cross-section shape was “工 ” shape, slide guide surface tolerance of 0.3 ~ 0.4mm. The first use of titanium on the ARJ21 aircraft