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单词 plunge-pole
释义

> as lemmas

plunge-pole
plunge-pole n. Obsolete a hollow piston rod in a pumping machine.
ΚΠ
1857 Hist., Gazetteer, & Dir. County Derby 489 This engine had a cylinder 50 inches diameter, single acting..plunge pole in the pit.
extracted from plungen.
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更新时间:2026/6/15 18:26:59