an 8051 single-chip microcontroller to sample human pulse signals的翻译：an 8051 single-chip microcontroller to sample human pulse signals 什么意思？中文翻译英文，英文翻译中文，怎么说？

青云英语翻译

8051单晶片微控制器采样人类的脉冲信号

an 8051 single-chip microcontroller to sample human pulse signals

An 8051 single-chip microcontroller to sample human pulse signals

an 8051 single-chip microcontroller to sample human pulse signals