土木建築專業交流、技師證照、職場就業、軟體技巧交流的好所在。https://www.civilgroup.org/
https://www.civilgroup.org/viewtopic.php?f=15&t=16082
webuser 寫:題解的答案寫錯了!應該寫成如下所示:σ = (+-){[(5*0.026^2)+(8*0.001^2)+(10*014^2)]/[(5+8+10)*(3-1)]}^(1/2) = (+-)0.0108m