نمایش نتیجه 1 تا 1 از 1 نتیجه یافت شده برای erosion drilling:
n: the high-velocity ejection of a stream of drilling fluid ". from the nozzles of a jet bit to remove rock encountered during drilling. Sometimes sand or steel shot is added to the drilling fluid to increase its erosive capabilities.
n: drilling adopting flowing fluid with high speed from the spray head of the jet bit eroding the rock in the bottom
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
