نمایش نتیجه 1 تا 3 از 3 نتیجه یافت شده برای cat shaft:
n: a device attached to the catshaft of the drawworks that is used as a power source for unscrewing drill pipe;usually located opposite the drillers side of the drawworks. See cathead.
n: The self-releasing cathead installed in the cat shaft of drawworks.
n: The spool driving cathead. The cathead is installed in the top of cat shaft.
n: The portable catworks is installed in the drill floor to replace cat shaft.
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
