نمایش نتیجه 1 تا 1 از 1 نتیجه یافت شده برای rotary drive countershaft:
n: a rotating shaft on the opposite side of the drawworks from the drillers console that gets power from one of the transmissions and sends it to the rotary table. It sits inside its own housing, which may be a part of the main drawworks frame or may be detachable for transportation.
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
