正则表达式验证，看看你写的正则表达式是否有错，vb-Regular expression validation, to see if you write regular expression is wrong, vb

DSP F2812 SPWM调制程序,规则采样法SPWM的输出,计算占空比表达式(DSP F2812 SPWM modulation procedures, regular sampling method, SPWM output, computing the duty cycle expression)