游梁式抽油机变速运行节能效果评价.Published in:Oil Drilling & Production Technology / Shiyou Zuancai Gongyi, 2015, v. 37, n. 3, p. 66, doi. 10.13639/j.odpt.2015.03.015By:冯子明;李琦;丁焕焕;高启明Publication type:Article