نمایش نتیجه 1 تا 1 از 1 نتیجه یافت شده برای steam rig:
n: a rotary drilling rig on which steam engines operate as prime movers. High-pressure steam is furnished by a boiler plant located near the rig. Steam rigs have been replaced almost totally by mechanical or electric rigs.
n: A kind of rotary equipment powered with steam engine.
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
