“bottom hold-down”的概念、定义、翻译、参考文献-科学参考

单词	bottom hold-down
释义	bottom hold-down [`bäd·ǝm `hōl dau̇n] ^{PETROLEUM ENGINEERING} A device located at the lower end of a bottom-hole pump that anchors it in a well.
随便看	reflection spectrum reflection survey reflection twin reflection x-ray microscopy reflective coating reflective code reflective insulation reflective spot reflectivity reflectometer reflector wire lath wire line wire-line coring wire-link telemetry wire mile wire nail wirephoto wire printing wire recorder wire recording wire rod wire rope wire saw wire scratcher

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