Review Reports

Round 1

Reviewer 1 Report

Comments for author File: Comments.pdf

Author Response

Please see the attached file.

Author Response File: Author Response.doc

Reviewer 2 Report

1. The content of each section suggests adding some new pictures and further segmentation to increase the readability of the article.
2. There is not much description of the progress of various applications. It is suggested that the author describe the progress in combination with some pictures, and pick out one or two representative works or the latest technical scheme.
3. The advantages and disadvantages of each application should not be simply described. It is suggested that the author can further describe its possible solutions for their disadvantages.
4. There is a problem with the format of references 34 and 35.

Author Response

Please see the attached file.

Author Response File: Author Response.doc

Round 2

Reviewer 1 Report

I am satisfied with this revision and it can be ready to publish with some given insights on the challenges of SM technique in the conclusion section.