<prompt> Translate the following text to EnglishKama ilivyoelezwa hapo juu, Utafiti wa anga ni thamani ya matumizi ya njia maalum ya utambulisho, ambayo ni gharama maalum ya kila kitengo cha PE ni sifa kwa kitengo hicho.  <response>: Those under the caption space exploration are valued using the specific identification method, that is, the specific cost of each unit of PPE is attributed to that unit. 