下偏杠鈴型游梁復(fù)合平衡抽油機(jī)技術(shù)改造及效果分析.pdf

1、華中科技大學(xué)碩士學(xué)位論文下偏杠鈴型游梁復(fù)合平衡抽油機(jī)技術(shù)改造及效果分析姓名：張萬江申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：機(jī)械工程指導(dǎo)教師：羅曉玉梁楚華20051202華中科技大學(xué)碩士學(xué)位論文Abstract加ongwIthdevelopin8毋矗racttechnoogiesofOilfield，gfo講ngtomorenewtypepU’妻t。e『ese連f螽聰a醛madeto鼬ecess&l譙蠢usedto壤ep∞duc|!。毽也ercafel酶

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