Core plug

（重定向自Freeze plug）

Core plugs are used to fill the sand casting core holes found on water-cooled internal combustion engines. They are also incorrectly called frost plugs, freeze plugs, or engine block expansion plugs.

单词	Freeze plug
释义	Freeze plug 英语百科 Core plug （重定向自Freeze plug） Core plugs are used to fill the sand casting core holes found on water-cooled internal combustion engines. They are also incorrectly called frost plugs, freeze plugs, or engine block expansion plugs.
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