error bars指误差线吗？怎么做呢？以前没做过，晕晕

你的图里面有误差棒吗？

图中没有误差线！

If you perform a repeat experiment most likely you will have some statistical analysis that tells you the experimental error in your experiment. From the analysis you need to include error bars in your figure using your Excel or whatever software you are using. I do not know how to include in this message an image but you can easily look on the internet for "error bar image" and you will understand，

只要有数据，就能做出来！关键是你计算误差数据了吗？