4. Розв’язавши багато наукових і технічних проблем, науковці
та інженери запустили першу експериментальну установку.

  • Having
    solved many scientific and technical problems, scientists and engineers
    launched the first experimental installation.
  • Having
    solved many scientific and technical problems, scientists and engineers
    launched the first installation.
  • Having
    solved some scientific and technical problems, scientists and engineers
    launched the first experimental installation.
  • Solving
    many scientific and technical problems, scientists and engineers launched the
    first experimental installation.
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