“*”号，“#”在英语里怎么读

找个公用电话机，随便拨个接入码，比如：201,
然后就听到普通话按1，英语按2，这时候按2，然后它就会说：请输入卡号，按井号结束。...and end with the hash key....这时候就能听到井号的英语是个啥：），就是这个hash key 。

井号的其他说法还有：
In North America, "pound key"
In some countries with British tradition, "hash key"
"number sign" is also used by some

* asterisk, multiply, star, pointer 星号，乘号，星，指针

其它一些符号的读法

+ plus 加号；正号
- minus 减号；负号
± plus or minus 正负号
× is multiplied by 乘号
÷ is divided by 除号
＝ is equal to 等于号
≠ is not equal to 不等于号
≡ is equivalent to 全等于号
≌ is equal to or approximately equal to 等于或约等于号
≈ is approximately equal to 约等于号
＜ is less than 小于号
＞ is more than 大于号
≮ is not less than 不小于号
≯ is not more than 不大于号
≤ is less than or equal to 小于或等于号
≥ is more than or equal to 大于或等于号
% per cent 百分之…
‰ per mill 千分之…
∞ infinity 无限大号
∝ varies as 与…成比例
√ (square) root 平方根