normal reciprocating
常见例句
- Reciprocating plunger pump is a kind of major equipment for oil production in oilfield, and its technique function directly influences the normal safe operating of oil unit.
往复式柱塞泵设备是油田采油单位的主要生产 设备，其技术性能的好坏直接影响到采油单位安全生 产的正常运行。
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