名词解释
打靶区是指点连式驼峰从车场减速位出口至打靶区末端的长度。
道岔区坡 gradient within the switching area
名词解释道岔区坡 gradient within the switching area
中间坡 intermediate grade
名词解释中间坡 intermediate grade
加速坡 accelerating grade
名词解释加速坡 accelerating grade
