通过对油压法的原理、液压力、密封等进行分析，阐明油压法在提钒转炉大齿轮拆除中的可行性。
By analysing principle, hydraulic pressure, seal, the feasibility of oil pressure method about main gear in striking refinement vanadium steel converter are discussed.
目的评价油压脉冲式球囊扩张法对上消化道管腔狭窄的疗效。
To evaluate the effete of treatment of stenosis in upper digestive tract by using oil-pumped and pulse bladder expanding.
目的评价油压脉冲式球囊扩张法对上消化道管腔狭窄的疗效。
To evaluate the effete of treatment of stenosis in upper digestive tract by using oil-pumped and pulse bladder expanding.
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