Sonar pipeline inspection system applied acoustic method to inspect the condition of liquid-filled pipe. It can provide the pipe’s condition in quantitative data which showing whether the pipe has damage or sediment (Sonar pipeline inspection system Project).
https://www.youtube.com/watch?v=W1KfQZK3kfU
https://www.youtube.com/watch?v=H0qk2mT48wc&list=PLCyJUW1YwFqim6bGDO4KuvUhIQEjs-CBk
https://www.youtube.com/watch?v=VQ2JaJGqcQs
Halloween or Hallowe'en (a contraction of Hallows' Even or Hallows' Evening), also known as Allhalloween, All Hallows' Eve,or…
https://www.youtube.com/watch?v=0RZUET-MdXw&list=PLCyJUW1YwFqhfINwg_TUalHboBSdvVVXh&index=4
https://www.youtube.com/watch?v=UWaq-9H_HeE
