normal reciprocating
常見例句
- 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.
往復式柱塞泵設備是油田采油單位的主要生產(chǎn) 設備，其技術性能的好壞直接影響到采油單位安全生 產(chǎn)的正常運行。
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