(论文)泵控伺服技术在钻井指重表检定装置中的应用 Application of pump-controlled servomotor on verification devices of weight indication gauges for oil well drilling
本文档由 457714 分享于2015-07-13 01:47
(论文)泵控伺服技术在钻井指重表检定装置中的应用 Application of pump-controlled servomotor on verification devices of weight indication gauges for oil well drilling
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君,已阅读到文档的结尾了呢~~