61.557.357.656.157.159.560.055.257.560.558.660.358.160.357.861.857.158.458.456.156.959.456.355.858.057.259.656.654.860.954.156.655.255.557.054.156.253.853.358.856.359.158.456.158.255.154.8等高距1m 比例尺1:2000 班级： 勾绘者57.2等高线勾绘练习61.557.357.656.157.159.560.055.257.560.558.660.358.160.357.861.857.158.458.456.156.959.456.355.858.057.259.656.654.860.954.156.655.255.557.054.156.253.853.358.856.359.158.456.158.255.154.8等高距1m 比例尺1:2000 班级： 勾绘者57.260等高线勾绘练习参考图556061.557.357.656.157.159.560.055.257.560.558.660.358.160.357.861.857.158.458.456.156.959.456.355.858.057.259.656.654.860.954.156.655.255.557.054.156.253.853.358.856.359.158.456.158.255.154.8等高距1m 比例尺1:2000 班级： 勾绘者57.2等高线勾绘练习229.828.037.463.053.147.029.240.932.136.856.137.050.238.138.152.838.447.044.350.926.219.5018.2022.922.032.0比例尺1:2000图中虚线表示山脊线，实线表示山谷线，等高距2m班级： 绘图者：50203040050504029.828.037.463.053.147.029.240.932.136.856.137.050.238.138.152.838.447.044.350.926.219.5018.2022.922.032.0高线勾绘练习参考图2比例尺1:2000图中虚线表示山脊线，实线表示山谷线，等高距2m班级： 绘图者：