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单词
sand pump
释义
sand pump
noun
:
a pump for removing wet sand, mud, or silt: as
a.
:
a centrifugal pump used on a floating dredging machine
b.
:
a simple plunger pump with a nonreturn valve at the bottom usually used for cleaning out a borehole
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更新时间:2025/11/15 1:59:20