Core 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	Core plug
释义	Core plug 英语百科 Core 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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