參考一下Wiki,http://en.wikipedia.org/wiki/Section_sign"§" Section sign,"#" 應該是 number sign, 美國以外的地方念hash"*" 如果你是講打字用字的話, 應該是念 asterisk, 但念 star並無不妥另外, 大寫的Sigma 是"Σ" 小寫的是"σ"
"#"在美國是唸作"pound sign",鮮少聽到有人唸作"number sign"的."In the United States and Canada, the symbol was traditionally called the pound sign..."Quote from Wiki, http://en.wikipedia.org/wiki/Number_sign