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单词
differential fill-up collar
释义
differential fill-up collar
differential fill-up collar
[
‚dif·ə′ren·chəl ′fil ‚əp ‚käl·ər
]
(petroleum engineering)
A mechanism installed in the bottom of a well, when casing is set in a drill hole that automatically admits drilling fluids into the casing as required.
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更新时间:2025/3/17 4:13:18