hydrographic survey أمثلة على

• Biological, geological and hydrographic surveys underwent for three days, before the pack ice forced the expedition to leave.
  خضعت الجزيرة لعدة مسوحات بيولوجية، وجيولوجية وهيدروغرافية لمدة ثلاثة أيام، قبل أن تجبر حزم الجليد البعثة على المغادرة.
• In 1994 a hydrographic survey of the area to the east of Muhurraq Island off the end of the runway located a wing of an aircraft subsequently identified as that of DC-4 F-BBDM.
  ب د د م.