single-span shaft
常见例句
- Optimization of Shaft Size and Centralizer Span of Single Screw Pump in Declined Oil Well. Chinese Journal of Computational Mechanics. 1(19):58-62.
隋允康、任旭春。斜井单螺杆抽油泵柱和扶正器间距的最优设计。计算力学学报，2002，1（19）：58-62。
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