시험발사에

In a sentence

• 이 로켓은 이번 달에 시험발사에 성공했습니다.

  This rocket successfully completed its test launch this month.

  In this sentence, '시험발사에' (test launch) is used to denote the completion of a testing phase for a rocket's functionality.

• 시험발사에 참여한 과학자들은 환호했습니다.

  The scientists involved in the test launch cheered.

  Here, '시험발사에' (test launch) is used to indicate an event where individuals, in this case scientists, were participating.

• 우리는 시험발사에 필요한 기술을 연구하고 있습니다.

  We are researching the technology necessary for a test launch.

  In this sentence, '시험발사에' (test launch) references a specialized activity for which preparations or technology development is underway.