نمایش نتیجه 1 تا 1 از 1 نتیجه یافت شده برای polished rod dynamometer:
n: a device that indicates the variation in load on the polished rod as the rod string reciprocates. A continuous record of the result of forces acting along the axis of the polished rod is provided 00 a dynamometer card, from which the perfor- mance of the well-pumping equipment is analyzed.
© ۱۳۹۲-۱۳۹۷ این اثر شامل قانون حمایت از مولفین بوده و هرگونه کپی برداری از آن ممنوع است.
