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Sonar pipeline inspection system applied acoustic method to inspect the condition of liquid-filled pipe. It can provide the…
https://www.youtube.com/watch?v=BueW9aQW0io
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=_cvf1vNtSSQ https://www.youtube.com/watch?v=fVI4MBdlJUg&t=39s
https://www.youtube.com/watch?v=zDTqoewpmZE