多零Excel函数公式导入说明

多零的Excel导入功能，支持函数公式，但是需要注意以下事项：

1. 应避免小数计算，小数计算存在计算溢出的问题，可能导致小数值不正确。

2. 支持常见的函数公式，但是不支持复杂的或者有风险的函数，包括以下函数：

   absref, app.title, argument, asc, averagea, betadist, betainv, binomdist, call, cell, chidist, chiinv, chitest, confidence, correl, covar, critbinom, datedif, datestring, datevalue, daverage, db, dbcs, dcount, dcounta, ddb, dproduct, dstdev, dstdevp, dvar, dvarp, enable.tool, end.if, error, evaluate, exec, expondist, fdist, findb, finv, fisher, fisherinv, forecast, ftest, gammadist, gammainv, gammaln, get.cell, get.document, get.window, get.workbook, get.workspace, getpivotdata, goto, growth, harmean, hypgeomdist, info, ispmt, kurt, last.error, leftb, lenb, linest, logest, loginv, lognormdist, midb, n, negbinomdist, normdist, norminv, normsdist, normsinv, numberstring, pearson, percentrank, permut, phonetic, press.tool, prob, quartile, register.id, relref, replaceb, return, rightb, rsq, save.toolbar, searchb, skew, sln, standardize, stdeva, stdevp, stdevpa, step, steyx, syd, tdist, timevalue, tinv, trimmean, ttest, type, usdollar, vara, varpa, vdb, weibull, window.title, ztest

3. 仅支持xls或者xlsx后缀的Excel文档的函数公式，不支持csv文档的函数公式。