英语词汇“concrete collar”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	concrete collar
释义	DictionarySeedoughnut concrete collar concrete collar, doughnut A collar of reinforced concrete which is placed around an existing column so that it can be jacked up; the shrinkage of the concrete causes it to grip the column firmly. MedicalSeeDoughnut
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concrete collar