{"text_format":"2","workbook":"xlsx","n_sheets":3,"sheets":["Sheet1","Sheet2","Sheet3"],"not_rendered":{"charts":0,"images":0,"macros":0,"external_links":0,"defined_names":0,"comments":0,"pivot_tables":0},"unopened":[],"bounds":{"document_bytes":16777216,"sheet_cells":100000,"run_cost":"one","rows_first":2000,"rows_last":500,"rows_between":2000,"halvings":0,"cell_chars":16384,"cell_head_chars":4096},"cells_cut":0,"cells_raw":0,"read":"whole","date_system":"1900"}

{"sheet":"Sheet1","index":0,"n_rows":5,"n_cols":5,"rows_kept":5,"cut":false,"hidden":false,"merged":[]}
[]
[]
[]
[null,null,"版本号","发布时间","描述"]
[null,null,"V2.1.03","2005-04-29","完善手机移动方向预测代码，并将预测方向应用到二维定位中，并且利用预测方向修订第一径；修改信号同步模块中的设计缺陷，解决轨迹跳变问题，改善定位效果；修改了1维定位时检查定位点是否在矩形框内的外延量，从3米修改为了5米。"]

{"sheet":"Sheet2","index":1,"n_rows":0,"n_cols":0,"rows_kept":0,"cut":false,"hidden":false,"merged":[]}

{"sheet":"Sheet3","index":2,"n_rows":0,"n_cols":0,"rows_kept":0,"cut":false,"hidden":false,"merged":[]}