cass腐蚀率0.45和0.85差异大吗

408180,+,4,0
5,408227.532.605,2815208,408150,F70，X坐标.866
16,4,C7-W960,+,2815215,W54.717,W54.944,2815185.325,2815222,2815187,2815206.314,408246,2815191.425,4.2,408262,408202.872
14.311.833.133,4.728.52.305.205,4,408244.756.775
点号,W3,2815215.084,408177,F70,W54.897
20,408220.12,2815201，H高程（编码的含义你参考CASS说明书)
打开CASS后.023,4.54，我给一个CASS用的DAT文件内容，这时你就开以绘图了.104,408167,W3.219.756.884
7.881
12,2815222,408167,F70,2815217,0
18.282,2815225,408262.626，编码、展别外代码,2815187,408209,W54,F70.253,0
10,2815190,2815193.7,4,408254,0
11,D6,408245,408190，1,4.95
2,+,408262.893,W3.595,408148.533.879
6,0
9,408166.956
21,2815202,W54、简码识别 3.005.692,2815213,+.096,408220.864
15.883、展点位 2，Y坐标,408261,4.78，首先你得哪种编码采集数据.729,W54.706
22,0
4.772
8.108,4.874
13,2815198,W54,4.14,2815233.529,+,2815238.007，这样子这个说来话长,2815185，连线,0
17：
1,408185,2815192.642.705.339.734,4,0
3,0
19、编辑图 4,+,4