Teacher Qin’s series on introductory chemical engineering design has been updated to Chapter 3: Structural Conditions – 44 minutes long
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Teacher Qin’s series on introductory chemical engineering design has been updated to Chapter 3: Structural Conditions. The chapter is 44 minutes long. Available at: http://bbs.hcbbs.com/plugin.php?id=tpgao_edu:view&typeid=31&cpid=1&courseid=37. The next chapter is expected to be updated again in about 1 week
Add a duration introduction. It’s better to have a free trial for the first two minutes, and then charge after that.
Agree with the person above; is it possible to have a few minutes to give it a try?
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